ancient mtdna was extracted clovis artifacts buried around 12600 years ago. analysis showed that the population to which this individual belonged is
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The ancient mitochondrial DNA (mtDNA) extracted from the skeleton of a male infant found in association with Clovis artifacts and buried around 12,600 years ago showed that the population to which this individual belonged is more closely related to populations from Asia than anywhere else, option (D) is correct.
The study of ancient DNA has provided valuable insights into the genetic diversity and population history of early humans. In this particular case, the mtDNA analysis of the Clovis infant revealed that the population to which he belonged is most closely related to populations from Asia.
The genetic evidence also suggests that the Clovis culture may have originated from these early Asian migrants and then spread throughout the Americas, option (D) is correct.
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The complete question is:
Ancient mitochondrial DNA (mtDNA) was extracted from the skeleton of a male infant found in association with Clovis artifacts and buried around 12,600 years ago. Analysis showed that the population to which this individual belonged is
A) More closely related to populations from central and south America than anywhere else.
B) More closely related to populations from Europe than anywhere else.
C) More closely related to populations from Africa than anywhere else.
D) More closely related to populations from Asia than anywhere else.
Related Questions
the contraction of forest habitat at the end of the miocene epoch: group of answer choices caused the evolution of bipedal locomotion selected against apes with the ability to walk on two feet made an already existing ability to walk on two feet newly advantageous caused the proliferation of ape genera and species
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The contraction of forest habitat at the end of the Miocene epoch "made an already existing ability to walk on two feet newly advantageous".
Bipedalism, the act of walking upright on two legs, is one of the most distinguishing features of human evolution. It has long been known that bipedalism first evolved among apes, but how and why it did so is still a mystery.
According to the fossil record, bipedalism appears to have first emerged among apes that lived in or near forests about 4.4 million years ago, during the Late Miocene epoch. However, this transition from walking on four limbs to walking on two legs was likely not an overnight phenomenon. Instead, it probably occurred gradually over a period of millions of years, and was likely driven by a combination of ecological and behavioral factors.
As the forests began to contract at the end of the Miocene epoch, bipedalism became newly advantageous for apes that could already walk on two feet. This made it easier for them to move around in the newly opened savannas and grasslands, which were much more open and expansive than the dense forests they were used to. Eventually, this newly acquired ability to walk on two feet became so useful that it led to the proliferation of ape genera and species.
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the study of normal tissue structure is called .the study of normal tissue structure is called .cytologybiopsyautopsyhistology
Answers
Answer:
D. histology
Explanation:
The study of normal tissue structure is called Medical Histology.
22. Rigor mortis is:
a. permanent.
c. temporary
b. one cause of death.
d. one manner of death.
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Which best describes pitch?
the amount of time taken for a longitudinal wave to produce one cycle the number of cycles per second perceived by the human ear the amplitude of a wave when the natural frequency is matched the distance between two corresponding parts of a transverse wave
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The answer is B. the number of cycles per second perceived by the human ear
I got this question right :)
The pitch is the number of cycles per second perceived by the human ear. The correct option is B.
What is pitch?The ability to assess sounds as "higher" and "lower" in the sense associated with musical melodies is known as pitch.
Pitch is a perceptual feature of sounds that allows their ordering on a frequency-related scale.
Pitch in physics refers to a sound wave's specific frequency, which is expressed in Hertz (Hz).
There are two ways in which these frequencies match musical notes. high tone: A high pitch is one that vibrates at a high frequency.
Pitch is a perceptual quantity that depends on the listener, but frequency is a physical quantity that indicates the number of vibrations per second. In truth, our ears perceive pitch rather than frequency.
The pitch is how many cycles per second the human ear can detect.
Thus, the correct option is B.
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Describe a non-biological hierarchy that exists in everyday life and how it relates to a biological system.
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Answer:
A non-biological hierarchy could be the way the military is organized, with the soldiers at the very bottom and the big commanders on top. (I don't know the specific names for each of them) This relates to a biological heirarchy since the smaller, sadly less important things are at the bottom, like atoms and soldiers, and each group of soldiers makes a regiment (which would be a molecule), then a battalion (which would be a cell), then so on. (I dont know the order of the groups but you can look it up)
1
The observation by Darwin that finches of different species on the Galápagos
Islands have many similar physical characteristics supports the conclusion that
these finches *
(1 Point)
A.all eat the same type of food.
B.originated from a common ancestor.
C.have the ability to interbreed.
D. acquired traits through use and disuse.
No links or bots please and thank you
Answers
Answer:
D
Explanation:
I think it was to do with beak lengths
proved that unpolished rice responsible for beriberi.
Answers
The absence of thiamin, or vitamin B1, is one of the causes of beriberi.
What food causes beriberi?According to the National Institutes of Health, beriberi is most prevalent in areas of the world where people consume unenriched, processed white rice, which has a tenth as much thiamine as brown rice.Thiamine deficiency is the cause of the illness beriberi (vitamin B1).In the dry form of beriberi, the long nerves gradually deteriorate, first in the legs and subsequently in the arms, along with muscular atrophy and reflex loss.Most often, alcoholics and those who only consume white rice or other highly refined carbohydrates are at risk for thiamin deficiency, which causes beriberi. Diffuse polyneuropathy, high-output heart failure, and Wernicke-Korsakoff syndrome are among the symptoms.Proved that unpolished rice is responsible for beriberi:
One of the contributing factors to beriberi is the lack of vitamin B1 or thiamin. Asians consumed polished rice (without nutrient-rich bran or germ) during this time. Christiaan Eijkman, a Dutch physician, and pathologist discovered that feeding unpolished rice to chickens helped prevent beriberi.
Therefore, feeding unpolished rice to chickens helped prevent beriberi.
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9. A protein molecule which is denatured, has
a. split into smaller molecules
c. Changed its shape
b. combined with another molecule d. been diluted
Answers
Answer: B. combined with another molecule
Explanation:
i just took the test
Proteins are macromolecules composed of amino acid chains joined through peptide bonds. A denatured protein molecule has changed its shape. Thus, option c is correct.
What is protein denaturation?Protein denaturation is a process where the proteins under unfavorable conditions like temperature, chemicals, and pressure result in an alteration in their functions.
The basic structural organization of the proteins contains primary, secondary, and tertiary formation that gets altered at high temperatures resulting in the breaking of the covalent bonds and disruption of the amino acid chain.
This results in the protein breaking and forming the primary structure that leads to alteration of the shape and conformation. This change results in loss of the function and activity of the protein.
Therefore, option c. the denatured proteins result in alteration in shape.
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1. Critic the following two views from the perspective of today’s sustainability. (50 points)
• Aristotle’s anthropocentric view: "Plants exist to give food to animals, and animals, to give food to men. … Since nature makes nothing purposeless or in vain, all animals must have been made by nature for the sake of man."
• Biocentric outlook by Paul Maylor: It values all living things in Earth’s community, so each organism is "a center of life pursuing its own good in its own way," and all organisms are interconnected.
Answers
Aristotle's anthropocentric view places humans at the center and considers other organisms as means to human ends, whereas the biocentric outlook recognizes the intrinsic value of all living things and emphasizes the interconnectedness and independent pursuit of well-being by each organism.
Aristotle's anthropocentric view, while reflective of the dominant perspective during his time, is heavily criticized from the perspective of today's sustainability. This view places humans at the center and considers the natural world as existing solely for human benefit. It disregards the intrinsic value and interconnectedness of all living organisms and ecosystems. This anthropocentric mindset has led to unsustainable practices, exploitation of natural resources, and the degradation of ecosystems, resulting in environmental crises such as climate change, habitat loss, and species extinction.
On the other hand, Paul Maylor's biocentric outlook aligns more closely with the principles of sustainability. It recognizes the inherent worth and autonomy of all living beings and acknowledges the interdependence of organisms within Earth's community. This perspective emphasizes the need for ecological balance and harmonious coexistence, promoting a more holistic approach to environmental stewardship.
From the standpoint of sustainability, the biocentric outlook offers a more comprehensive and ecologically responsible framework. It encourages a shift away from exploitative practices towards a greater respect for the intrinsic value of nature and the need for conservation and preservation. By recognizing the interconnectedness of all life forms, this perspective promotes sustainable living that supports the well-being of both humans and the natural world.
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identify which enzymes are involved in transcription and which are involved in translation.
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Answer:
Explanation:
RNA poylmerase is the enzyme involved in transcription
eptidyl transferase is the main enzyme used in Translation
1. Name the invention that helped scientists discover the cell.
Answers
Answer:
The Microscope
Explanation:
Which of the following describes the characteristics of the offspring of a
cross between pure-breeding tall plants?
A. There is not enough information to answer the question.
B. They will all be short.
C. Some will be tall, and some will be short.
D. They will all be tall.
Answers
Since you would be crossing between two pure-bread tall plant, they would all have TT making them all tall.
which of these organelles contains the genetic material in a eukaryotic cell?
Answers
In eukaryotes, the genetic information, or DNA, is organised into long molecules set of chromosomes and is housed inside of an organelle known as the nucleus.
All prokaryotic and eukaryotic cells contain DNA as their genetic material. The genetic information is located in the nucleus of eukaryotic cells, which is clearly defined. When you look at a photo of a cell, one of the parts that stands out the most is the nucleus. The nucleus, located in the centre of the cell, is home to all of the chromosomes, which are responsible for encoding the genetic material. Most eukaryotic cells contain the nucleus, a membrane-enclosed organelle that houses the genetic material (DNA). The nuclear envelope, a dual lipid bilayer encasing the nucleus, contains nuclear pores.
(The cell organelle that contains the genetic material in a eukaryotic cell is called the)
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How does comparing the embryos of different organisms support the theory of evolution?
A)the embryos of all organisms are identical.
B)the embryos have adaptation for the same environment as adults
C)the stages of development of the embryos of different organisms are extremely similar, thereby suggesting common ancestors.
D)the embryos of any group of living things resemble the other embryos in that group.
Answers
Answer:
C
Explanation:
The tree of life suggests so, also the internet told me C was right
I think so let me know if you have they right one
For questions 10-13, use the following answer key to determine the pattern of
inheritance:
A. Incomplete dominance
B. codominance
C. polygenic trait
D. X-linked tralt
10. Skin color in humans is controlled by six different genes, an example of a genotype for
human skin color would be: aaBbccDDEeFf, or AabbCcddEEFF.
11. A red camnation and a yellow camation cross-fertilize and produce six peach-colored
camations.
12. A woman who is a carrier for Duschene's Muscular dystrophy passes the disorder onto
one of her sons.
13. Certain breeds of chickens can be black-feathered, white-feathered, or checkered-
feathered,
Answers
1-incomplete dominance
2-polygenic trait
3-sex-linked trait
4-codominance
Which of the following is not one of the two main systems of plants?
Answers
Question:
Solution:
Remember that a vascular plant consists of two organ systems. These two organ systems are:
Shoot system: includes the aboveground vegetative portions (stems and leaves) and reproductive parts (flowers and fruits).
Root system: supports the plant and is usually underground.
So that, we can conclude that the correct answer is:
VASCULAR SYSTEM.
According to the author of Passage 1, one of the reasons why dodo birds were so large is that they
Answers
"had no predators of nature." Passage 1 claims that the dodo bird had no natural predators when it was isolated on the island of Mauritius.
"had no natural predators." According to passage 1, when the dodo bird was isolated on the island of Mauritius, it had no natural predators. Passage 1 claims that the dodo bird had no natural predators when it was isolated on the island of Mauritius. The absence of predators made flight or other defensive adaptations unnecessary, allowing the dodo to develop. The size of the dodo was probably a survival strategy for reaching food sources that other birds couldn't. Unfortunately, when people came on the island, they brought with them predatory species, which ultimately caused the dodo to go extinct.
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According to the author of passage 1, the dodo bird's large size was likely due to its food sources, which included large, terrestrial animals.
The dodo bird was a flightless bird that lived on the island of Mauritius, which had a unique ecosystem with few predators and an abundance of food. The author suggests that the dodo bird evolved to be larger than other bird species on the island, as it did not need to fly and had access to plentiful food sources. The author does not suggest that competition with larger birds, interbreeding with other species, or the absence of predators contributed to the dodo bird's large size. Instead, the author highlights the unique ecological factors on the island of Mauritius as the primary driver of the dodo bird's physical characteristics.
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Correct question:
According to the author of passage 1, one of the reasons why dodo birds were so large is that they choose 1 answer: (choice
a.a competed with larger birds, such as the haastâs eagle. (choice
b.b had food sources that included large, terrestrial animals. (choice
c.c interbred with the larger, flightless moa. (choice
d.d had no natural predators on the island of mauritius.
3. In your experiment, you created two separate systems: cellular respiration in part 1,
and photosynthesis in part 2. Explain whether these two separate systems are a good
representation of the way cellular respiration and photosynthesis work in the natural
world. Can living things survive in a system involving only cellular respiration or only
photosynthesis? If not, how could you use similar materials to set up a new
experiment that would better model the real world? (3 points)
Answers
The two separate systems of cellular respiration and photosynthesis in an experiment are not a perfect representation of how these processes work in the natural world.
Living things cannot survive solely on either photosynthesis or cellular respiration. They require both processes to occur in order to produce the energy needed for life. In a more realistic experiment, both processes could be combined to create a closed system that would better model the real world.
This would involve using a photosynthetic organism, such as a plant, in combination with an organism that undergoes cellular respiration, such as a microbe. By combining these two processes, a closed ecosystem could be created that would more accurately mimic the natural world.
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Each type of enzyme has a specific shape. Another molecule can fit into it if they are both complementary in shape. This means that
Answers
Answer:
I believe it means that there is specificity of the molecule to that enzyme
Which of the following statements are true about amphibians?
a. they are cold-blooded
b. Respiration occurs through gills, skin and lungs.
c. they are poikilotherms
d. Respiration occurs only through gills and skin.
Answers
The following statements are true about amphibians: a. they are cold-blooded, b. respiration occurs through gills, skin, and lungs, and c. they are poikilotherms. Respiration does not only occur through gills and skin; blood oxygenation also takes place in the lungs.
Amphibian characteristicsAmphibians are cold-blooded animals: Which means that their body temperature changes with the temperature of their environment. Amphibians are poikilotherms: It means that they cannot regulate their body temperature internally as warm-blooded animals can. Respiration in amphibians occurs through their gills when they are in the water, through their skin when they are on land, and through their lungs when they are breathing air.Therefore, statements a, b, and c are true.
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what is the main function of stumach
Answers
Answer:
TO AID DIGESTION
Explanation:
The core function of the human stomach is as an aid to digestion. The four key components of gastric digestive function are its function as a reservoir, acid secretion, enzyme secretion and its
role in gastrointestinal motility.
I HOPE THIS HELPS
Answer:
The main function of stomach are:
1.It store food and release it to the intestines at the ate where by the intestine can process it
2. Digests food
Need help ASAP:
Analyze what would happen to an object that forms like a star but does not have at least 75 times the mass of Jupiter.
Answers
It would not be able to sustain nuclear fusion in its core and would not become a main sequence star like the Sun.
What would happen?
The Sun-like main sequence star would not form if an item that forms like a star does not have at least 75 times the mass of Jupiter (approximately the minimum mass necessary for sustained hydrogen fusion to occur). Instead, it would not be able to maintain nuclear fusion in its core.
An object like that would most likely be categorized as a brown dwarf, a type of sub-stellar object. Due to their inability to produce enough internal pressure and temperature to start hydrogen fusion in their cores, brown dwarfs are frequently referred to as "failed stars".
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Sometimes red blood cells have both a antigens and b antigens present on their surface. in this case, the red blood cells are exhibiting a genetic characteristic known as?
Answers
The genetic characteristic exhibited by red blood cells that have both A and B antigens present on their surface is known as codominance.
Codominance is a type of inheritance in which two alleles are equally dominant, and both are fully expressed in the phenotype of the heterozygote. This means that both traits are displayed at the same time without any blending of traits.
AB blood group in humans is an example of codominance. In the AB blood group, both A and B alleles are fully expressed, and both are equally dominant. Therefore, an individual with AB blood group has both A and B antigens on their red blood cells.
The A and B alleles code for different glycoproteins that are responsible for the A and B antigens present on the surface of red blood cells. Individuals with A blood group have A antigens on their red blood cells, and individuals with B blood group have B antigens on their red blood cells.
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if a gene is located in the Y chromosome could the trait ever be expressed in a female?
Answers
can all genetic mutations be observed with a karyotype explain
Answers
Answer:
Karyotypes can reveal changes in chromosome number associated with aneuploid conditions, such as trisomy 21 ( Down syndrome ). Careful analysis of karyotypes can also reveal more subtle structural changes, such as chromosomal deletions, duplications, translocations, or inversions.
Explanation:
What temperatures are involved in the pcr cycle? what processes take place at each temperature?
Answers
The answer to the above question is:
94 degree Celsius for denaturation, 45-65 degree Celsius for primers anneal, and 72 degree Celsius for primer extension.
Denaturation: This process denatures the template (breaks the hydrogen bonds between the two strands) and activates the Taq DNA polymerase. You can adjust the activation period for a particular application or to increase yield, but it is typically kept around 94 degrees C for 2-3 minutes.
The primers anneal to the target sequence region of the template during this stage. The annealing temperature, which is typically 45–65 °C, depends on the Tm of the primers.
Primer extension/elongation: In this stage, Taq polymerase amplifies the target sequence at 72 degrees Celsius for the duration of the target's length, often between 45 and 3 minutes.
What is denaturation?Denaturation is a biological process that alters a protein's molecular structure. As a result of denaturation, many of the weak connections or bonds (such as hydrogen bonds) that give proteins their highly organized structure in their native (natural) state are broken.
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What is Cancer? how is mitosis related to cancer?
Answers
Explanation:
Cancer: mitosis out of controlMitosis is closely controlled by the genes inside every cell. Sometimes this control can go wrong. If that happens in just a single cell, it can replicate itself to make new cells that are also out of control. These are cancer cells.A country's ecological footprint can be calculated by multiplying its population size by the footprint of each individual. Why are some ecologists concerned about the ecological footprint of a country like India
Answers
Answer:
Ecological footprint estimates the requirements of renewable resources that a population consumes to live a particular lifestyle. Some ecologists are concerned because the result of the ecological footprint shows that the demand of the population is increasing in comparison to the supply of nature.
For example in India, the ecological footprint shows negative impact of population demand over supply of nature.
the specimen pictured lived in south africa, was discovered by raymond dart in 1925, and was approximately 3 years old at time of death (fossil includes an endocast of the brain). what fossil/species is depicted?
Answers
The specimen pictured lived in south africa, was discovered by raymond dart in 1925, and was approximately 3 years old at time of death that fossil/species is Australopithecus africanus.
When the skull of this 3-year-old child was discovered in 1924, it was one of the first early human fossils discovered in Africa and the first early human fossil discovery to garner significant attention to this area as the birthplace of the human family tree. But it still took more than 20 years for scientists to acknowledge Africa's significance as a key region in the history of human evolution.
Researchers initially observed signs of early human upright, two-legged (bipedal) walking in the preserved anatomy of the Taung Child. The location of the Taung Child's foramen magnum, or the opening through which the spinal cord and the brain are connected, served as proof.This spinal cord opening is located near the front of the Taung Child's skull, which is a feature connected to bipedal movement. The foramen magnum of a four-legged ape is located at the back of the head to keep its eyes forward (and not down) when it moves, in contrast to a bipedal adaption that allows the head to balance atop the neck.
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if the codon for phe is 5'- u u c 3' what is the anticodon that would be found on the trna that carries phe?
Answers
if the codon for phe is 5'- u u c 3' , AAG is the anticodon that would be found on the trna that carries phe. Their function is to base pair with the codon on a strand of mRNA during translation.
An amino acid's specific genetic information is encoded by a codon, which is a DNA or RNA sequence made up of three nucleotides (also known as a trinucleotide). A trinucleotide sequence called an anticodon is found at one end of a transfer RNA (tRNA) molecule and is complementary to a corresponding codon in an mRNA sequence. During protein synthesis, each time an amino acid is added to a developing polypeptide, a tRNA anticodon couples with the corresponding codon on the mRNA molecule to ensure that the correct amino acid is incorporated into the polypeptide.
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