Jezelyn needs to create a project that shows geographic isolation in action and decides to make a video. Which of the following would make the best project?
Answers
Answer:
a video that shows penguin species that have different mating dances
Explanation:
The question is incomplete as it does not have the options which are:
a video that shows a large river that has penguin populations on both sidesa video that shows penguin species that have different mating dancesa video that shows a penguin that is laying eggsa video that shows penguins in a tidal pool and an open oceanAnswer:
a video that shows penguin species that have different mating dances
The reproductive isolation is the factor which allows the species to evolve and form a new species, therefore, this factor is used to describe a species.
The reproductive isolation refers to a mechanism in which the species are isolated to not interbreed with the individual of other species. The reproductive isolation could be due to behavioural, psychological, physical or genetic differences. evolved as an adaptation.
In the given cases, the penguin species which shows different mating dances is considered to be reproductively isolated as the different dance rituals evolved as behaviour to prevent them from mating.
Thus, the selected option is correct.
A video that shows a large river that has penguin populations on both sides would make the best project. So, the correct option is A.
What is Population?A population is defined as the complete set of individuals, whether that group includes a nation or a group of people with a common characteristic which is the pool of individuals from which a statistical sample is drawn for a study. .
It is described as a unit of biological community made up of a permanent group of an interbreeding individual of a species found in a space or geographic region at a particular time. Population are of three types of population pyramids created from age-sex distributions-- expansive, constrictive and stationary.
Thus, a video that shows a large river that has penguin populations on both sides would make the best project. So, the correct option is A.
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Your question is incomplete, most probably the complete question is:
Jezelyn needs to create a project that shows geographic isolation in action and decides to make a video. Which of the following would make the best project?
a video that shows a large river that has penguin populations on both sidesa video that shows penguin species that have different mating dancesa video that shows a penguin that is laying eggsa video that shows penguins in a tidal pool and an open oceanRelated Questions
Which nucleotide can receive a methyl group that can then result in a potential expression change of a nearby gene? a. A b. T c. C d. G. c C.
Answers
C (cytosine) can receive a methyl group that can then result in a potential expression change of a nearby gene. The correct option is C.
As per the question given,
This process is known as DNA methylation and is a common epigenetic modification that can affect gene expression. When a methyl group is added to the cytosine nucleotide, it can change the way that nearby genes are transcribed and can ultimately affect the phenotype of the organism.
(NOO-Klee-oh-tide) a nucleotide - is a molecule made composed of a sugar, phosphate group, and a nitrogen-containing base (adenine, guanine, thymine, or cytosine in DNA; adenine, guanine, uracil, or cytosine in RNA) (deoxyribose in DNA; ribose in RNA).
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.ما مصدر الأكسجين المتفاعل مع سكر الجلوكوز
Answers
يأتي الأكسجين الذي تستخدمه الحيوانات للتنفس الخلوي من النباتات وكائنات التمثيل الضوئي الأخرى. متفاعلات التنفس الخلوي في الحيوانات هي نتاج تلك الموجودة في النباتات ، لذلك كل شيء يعمل بشكل جيد.
(أنا لا أتحدث العربية ، لقد استخدمت ترجمة جوجل لذلك أعتذر عن أي أخطاء)
dry lab evidence of evolution
Answers
Answer:no
Explanation: because it’s no
Answer:
The evidence for evolution
In this article, we'll examine the evidence for evolution on both macro and micro scales.
First, we'll look at several types of evidence (including physical and molecular features, geographical information, and fossils) that provide evidence for, and can allow us to reconstruct, macroevolutionary events.
At the end of the article, we'll finish by seeing how microevolution can be directly observed, as in the emergence of pesticide-resistant insects.
what are two anatomical adaptations that would have allowed the genus homo to be more successful in other environments? explain how these would be beneficial.
Answers
The emergence of the species Homo in Africa marks the beginning of the transition from primitive, large-brained, stone tool-using, meat-eating apes to those that roamed widely. Homo habilis, Homo rudolfensis, and Homo erectus are the three species that make up this early period of the human genus.
In fact, our larger genus, Homo, may be most known for its versatility. The ability of early humans to adapt to dramatic climate swings, according to new research published in Science, probably allowed them to diversify, distinguish, and leave Africa 1.85 million years ago.
The physical sizes of erectus were comparable to those of contemporary humans, and it is the first known progenitor of modern humans to have proportions for the limbs and torso.
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If the population of poison dart frogs in this rain forest community were to disappear, which of these populations would be most likely to increase?
A: Fruit bat
B: Sloth
C: Beetle
D: Strangler fig
Answers
Answer:
c
Explanation:
the beetles fall prey to the poison dart from so if they went extinct they wouldn't be a threat to the beetles population
The enzyme that covalently links strands of a vector and human insert DNA in molecular cloning is ____________ . a. DNA ligase
Answers
The enzyme that covalently links strands of a vector and human insert DNA in molecular cloning is DNA ligase.
Molecular cloning is a well-known molecular biology technique that entails the creation of a recombinant DNA molecule. In this method, recombinant DNA molecules are created, which are made up of a piece of foreign DNA and a vector DNA. The vector DNA is self-replicating, allowing for the foreign DNA to be replicated and propagated within a host organism's cell.DNA ligase plays a crucial part in molecular cloning by covalently binding the DNA segments. The enzyme is utilized to ligate the gap between the 3′ hydroxyl and 5′ phosphate ends of adjacent DNA strands. DNA ligase works by creating a phosphodiester bond between the two nucleotides, which is the enzyme's mechanism of action.
Molecular cloning is useful for producing recombinant DNA that can be utilized for several reasons, including the study of gene expression and regulation, the study of protein functions and structure, and the study of gene regulation.
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please can you help me.
Answers
Answer:
i dont reallly get theconcept but in my opinion more test should be done because it doesn't have as many lines as the ohter topcis
10
Use the information to answer the following question.
1. tRNA brings the correct amino acid specified by the mRNA codon
2. DNA is used as a template to create mRNA, which leaves the nucleus
3. Amino acids are bonded together to make a polypeptide (protein)
4. mRNA molecule binds to a ribosome
5. The ribosome releases both the mRNA molecule and the polypeptide (protein)
Which of the following demonstrates the correct sequence of events that occurs during protein synthesis?
2, 4, 1, 3, 5
1, 2, 3, 4, 5
2, 4, 3, 5, 1
4, 2, 1, 5, 3
Answers
DNA acts as a template for the mRNA and later gets into the cytoplasm to bind with the ribosome for translation. The polypeptide chain is formed as a result. The correct order of protein synthesis is the first sequence.
What is eukaryotic translation?In eukaryotes, the nuclear membrane separates the nucleus from the cytoplasm, so the mRNA needs to translocate from the nucleus to the cytoplasm. The DNA acts as a template on which mRNA is formed, which passes through the nuclear pore to the cytoplasm and binds to the ribosome. The ribosome reads the mRNA with the help of tRNAs that are associated with amino acids, and in this way the polypeptide chain is synthesized.
Hence, the correct order is mentioned in the first sequence.
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if fully methylated dna is introduced into a plant or animal cell, in subsequent generations the dna will be . if the same sequence of nonmethylated dna is introduced into a cell, it will be in daughter cells. need help? review these concept resources.
Answers
If fully methylated DNA is introduced into a plant or animal cell, in subsequent generations the DNA will remain fully methylated.
On the other hand, if the same sequence of nonmethylated DNA is introduced into a cell, it will remain nonmethylated in daughter cells. DNA methylation is a process in which a methyl group is added to the cytosine base of DNA. This modification can affect gene expression and cellular differentiation. When a cell divides, the DNA is replicated and the methylation pattern is usually faithfully maintained in daughter cells. Therefore, if fully methylated DNA is introduced into a cell, the methylation pattern will be maintained in subsequent generations. Similarly, if nonmethylated DNA is introduced, the absence of methylation will also be maintained in daughter cells.
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Which statement is FALSE about epigenetic modifications?
a. The tails of the nucleosome octamer components can be modified with methylation
b. The tails of the nucleosome octamer components can be modified with acetylation
c. Only non-DNA components of chromatin are modified with epigenetic markers
d. Epigenetic modifications control whether a region is euchromatin or heterochromatin
Answers
The false statement about epigenetic modifications is:
c. Only non-DNA components of chromatin are modified with epigenetic markers.
Epigenetic modifications refer to changes in gene expression that do not involve changes to the underlying DNA sequence. These modifications can be inherited and can influence how genes are turned on or off in different cells or at different stages of development.
a. The tails of the nucleosome octamer components can be modified with methylation: This statement is true. Methylation of the tails of nucleosome octamer components, which are made up of histone proteins, can affect gene expression by either activating or repressing the associated genes.
b. The tails of the nucleosome octamer components can be modified with acetylation: This statement is also true. Acetylation of histone tails is another type of epigenetic modification that can influence gene expression. Acetylation generally leads to gene activation by relaxing the chromatin structure and allowing transcription factors to access the DNA.
d. Epigenetic modifications control whether a region is euchromatin or heterochromatin: This statement is true. Epigenetic modifications play a crucial role in determining whether a region of DNA is in a euchromatin state, which is more accessible for gene expression, or a heterochromatin state, which is more condensed and less accessible for gene expression.
In summary, the false statement is c. Only non-DNA components of chromatin are modified with epigenetic markers. Epigenetic modifications can occur on both DNA and non-DNA components of chromatin, such as histone proteins. These modifications can have significant impacts on gene expression and are essential for cellular development and function.
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Define cell membrane
Answers
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
1. Reproduce and have offspring 2. maintain homeostasis 3. Respond to their environment
Answers
Answer:
look im not sure btw but i think no.1
Explanation:
How long does it take the specific immune system to become active?
Answers
It takes 1 to 2 weeks for the particular immune system to become activated.
The adaptive (active) immune response takes 1 to 2 weeks to fully activate, which is substantially longer than the twelve hours necessary to fully activate innate immunity. With the development of a adaptive immune response comes a phenomena known as immunologic memory, which is an immunological defence that may endure a lifetime and give future protection if the same antigen is re-exposed.
Active immunity can be developed spontaneously or by vaccinations. A youngster infected with chickenpox or varicella-zoster is one example of this. The child's immune system will create a specialized response to the virus during this sickness, and the youngster will have immunity going forward. This is a normal, vigorous immunological response. Vaccination with both the live attenuated varicella vaccine is an example of acquired immunity against varicella. The individual has never been infected with the pathogen by this approach.
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which statement is false?human beings are bipedal and have paired extremities.the human skeleton consists of 306 bones.the body of every person is composed of the same materials commonly found in the earth.
Answers
The statement that is false among the following three statements is "the body of every person is composed of the same materials commonly found in the earth."This is a false statement because the human body is composed of various elements that are not commonly found in the earth.
The majority of the elements in the human body are carbon, hydrogen, oxygen, nitrogen, calcium, and phosphorus. These are the six main elements that are found in the human body in large amounts. There are some minor elements present in the body in smaller amounts, which include iron, sodium, chlorine, potassium, and magnesium. There are a total of 26 elements that make up the human body. These elements are arranged in different proportions and combinations to form different types of molecules. Proteins, fats, carbohydrates, and nucleic acids are all made up of these elements.The other two statements are true. Human beings are bipedal and have paired extremities. The human skeleton consists of 206 bones, not 306. This is an important fact to remember. There are two types of skeletons that can be found in the animal kingdom: exoskeletons and endoskeletons. The human body has an endoskeleton, which means that the bones are located on the inside of the body, providing protection for the organs and support for the body. Therefore, "the body of every person is composed of the same materials commonly found in the earth." ; this statement is false because the human body is composed of various elements that are not commonly found in the earth.For more such questions on human body , click on:
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What’s the difference between metals and nonmetals?
Answers
Answer:
Explanation:
metal are solid metals in room temperature, and several nonmetals are gasses at room temperature.
hope this helps
If two organisms have homologous structures and similar early development, what can you infer about them?
Answers
Answer:
Common ancestry
Explanation:
If two things have similar structures and have similar early development that means they likely originated from a common ancestory a long time ago. This would support the notion that they are evolutionary related.
What produces gametes with a missing or extra chromosome and may result in embryonic, fetal, or infant death or a trisomic individual? multiple choice question.
Answers
The condition that produces gametes with a missing or extra chromosome and may result in embryonic, fetal, or infant death or a trisomic individual is called nondisjunction.
Nondisjunction is a chromosomal abnormality that occurs during cell division, specifically during meiosis. It leads to the unequal distribution of chromosomes between gametes. Trisomy refers to the presence of an extra copy of a chromosome, such as trisomy 21 in Down syndrome. Nondisjunction can also result in monosomy, which is the absence of a copy of a chromosome. These chromosomal abnormalities can have severe consequences on the development and survival of the embryo, fetus, or infant.
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if a gallon of toxic chemical spilled on the land surface, which of the following are likely to become contaminated
Answers
Answer:Surface Water.
Explanation:
whats the answer to this questgion
Answers
A random mutation caused an individual bacteria to be resistant to antibiotics. The bacteria survived the antibiotics and reproduced. Option B.
How do bacteria develop resistance to antibiotics?Bacteria can develop resistance to antibiotics through mutations in their DNA. These mutations can occur spontaneously or as a result of exposure to antibiotics or other stressors.
Individual bacteria with the mutation are able to survive the antibiotic treatment. Natural selection favors the mutated trait and mutated bacteria survive and produce more.
With time, the individual bacterium that cannot withstand the antibiotic dies off the population, leaving those that are resistant to the antibiotics.
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Find Sensitivity, Specificity, PPV, and NPV for Medical testing: A medical test is performed for total 1000 people. The result is shown in the following table. Find the value of Sensitivity. A. 12.5% B. 3.3% C. 96.7% D. 87.5%
Answers
The values of Sensitivity, Specificity, PPV, and NPV are 94.12%, 46.67%, 90.91%, and 58.33%, respectively.
The table shows the results of a medical test performed on 1,000 individuals:
True positive (TP) = 800
False negative (FN) = 50
False positive (FP) = 80
True negative (TN) = 70
Calculate Sensitivity, Specificity, Positive Predictive Value (PPV), and Negative Predictive Value (NPV) based on the information given.
Let's begin by calculating sensitivity:
Sensitivity = TP / (TP + FN)
Sensitivity = 800 / (800 + 50)
Sensitivity = 800 / 850
Sensitivity = 0.9412
Sensitivity = 94.12%
Therefore, the answer is C. 96.7%.
Calculate Sensitivity, Specificity, Positive Predictive Value (PPV), and Negative Predictive Value (NPV) based on the information given.
Let's begin by calculating sensitivity:
Sensitivity = TP / (TP + FN)
Sensitivity = 800 / (800 + 50)
Sensitivity = 800 / 850
Sensitivity = 0.9412
Sensitivity = 94.12%
The formula for specificity is:
Specificity = TN / (TN + FP)
Substituting the values,
Specificity = 70 / (70 + 80)
Specificity = 70 / 150
Specificity = 0.4667
Specificity = 46.67%
The formula for PPV is: PPV = TP / (TP + FP)
Substituting the values, PPV = 800 / (800 + 80)PPV = 800 / 880PPV = 0.9091PPV = 90.91%
The formula for NPV is: NPV = TN / (TN + FN)
Substituting the values, NPV = 70 / (70 + 50)
NPV = 70 / 120
NPV = 0.5833
NPV = 58.33%
Therefore, the values of Sensitivity, Specificity, PPV, and NPV are 94.12%, 46.67%, 90.91%, and 58.33%, respectively.
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Bellma wants to test if a bouncy ball will bounce higher if it is warmer. For her experiment
test, she puts her bouncy ball in warm, 70°C water. She takes it out and lets it go from the
height of 2m, and the ball bounces. She records the whole thing on video.
What should Bellma do for a control test so that she can.compare the results to her experiment?
State EVERYTHING that is important! (5pts)
Answers
Answer:
bounce the ball from the same height without heating it, use water at room temperature, record to compare
FUN FACT OF THE DAY (day:5)
Sharks have the thickest skin of any animal species. Some sharks have skin that is 6 inches thick. Sharks have the largest brains of any fish.
Answers
Answer:
dats cool
Explanation:☺
can someone help me with these
Answers
Answer:
chromatid
telophase
cytokinesis
cancer
prophase
interphase
anaphase
mitosis
centriole
Explanation:
It should spell out metaphase
hope this helps :)
classify each acid or property as representing a strong or weak acid.
Answers
The strong acids are hydrochloric acid, larger Ka, and strong tendency to dissociate protons. The weak acids are acetic acid, partially dissociates into ions, and larger pKa*.
Depending on the initial acid, a proton (hydrogen ion) is transferred from an acid to a water molecule to form a hydroxonium ion or a negative ion. All of these reactions are reversible, but in some instances we can consider the reaction to be one-way since the acid is so effective at releasing hydrogen ions. Almost all of the acid has been ionised. When an acid is dissolved in water, it doesn't entirely ionise, making it a weak acid. A example weak acid is ethanolic acid. When combined with water, it combines to form ethanoate and hydroxonium ions, however the reverse reaction is more effective than the forward one. The acid and the water are easily reformatted by the ions.
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The complete question is:
Classify each acid or property as representing a strong or weak acid.
during the orgasmic phase, the scrotum pulls up close to the body in preparation for ejaculation, what muscle is largely responsible for this?
Answers
Pls award brainliest!
After ingested food is mixed and churned with gastric secretions, the semifluid mass is called a. chyle. b. chyme. c. renin. d. bolus.
Answers
After ingested food is mixed and churned with gastric secretions, the semifluid mass is called chyme.
This mixture of partially digested food and gastric juices is produced in the stomach and then released into the small intestine, where further digestion and absorption of nutrients occurs. The chyme is gradually moved through the small intestine by peristaltic contractions, and as it moves along, it is mixed with digestive secretions from the pancreas and liver. Eventually, the chyme is converted into feces and eliminated from the body.
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The cranial nerve responsible for movement of the medial rectus, superior rectus, inferior rectus and inferior oblique eye muscles is the ________ nerve.
Answers
Answer: This is the oculomotor nerve.
I hope this helps!
The characteristic that determines which generation in plants is dominant is the generation that.
Answers
The characteristic that determines which generation in plants is dominant is the generation that is diploid.
Diploid is a time period that refers to the presence of whole units of chromosomes in an organism's cells, with every discern contributing a chromosome to every pair. Humans are diploid, and maximum of the body's cells include 23 chromosomes pairs.
Humans have forty six chromosomes in every diploid cell. Among those, there are sex-figuring out chromosomes, and 22 pairs of autosomal, or non-sex, chromosomes. The general range of chromosomes in diploid cells is defined as 2n, that is two times the range of chromosomes in a haploid cell (n).
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identify and describe three modifications made to mrna after transcription.
Answers
Three modifications made to mRNA after transcription are the addition of a 5' cap, the addition of a poly-A tail at the 3' end, and the removal of introns through splicing.
After transcription, mRNA undergoes several modifications to become a mature mRNA molecule. These modifications include the addition of a 5' cap, the addition of a poly-A tail at the 3' end, and the removal of introns through splicing.
The first modification is the addition of a 5' cap, which is a modified guanine nucleotide added to the 5' end of the mRNA molecule. This cap helps protect the mRNA from degradation and assists in the binding of the mRNA to the ribosome during translation.
The second modification is the addition of a poly-A tail at the 3' end of the mRNA molecule. The poly-A tail is a string of adenine nucleotides added to the mRNA. It also helps protect the mRNA from degradation and plays a role in the export of the mRNA from the nucleus.
The third modification is the removal of introns through a process called splicing. Introns are non-coding regions of the mRNA that are removed, and the exons, which are the coding regions, are joined together. This process ensures that only the coding regions are translated into proteins.
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The modifications made to mRNA after transcription includes Capping, Polyadenylation and Splicing.
The modifications of mRNA after transcription are necessary for protein synthesis to take place. The following are three modifications made to mRNA after transcription:
1. Capping: This is the process where a 7-methyl guanosine cap is added to the 5’ end of the mRNA molecule. This cap functions to protect the mRNA from degradation, it also plays a significant role in the initiation of translation, where the small ribosomal subunit binds to the cap structure to start the process.
2. Polyadenylation :This process takes place at the 3’ end of the mRNA molecule, and it involves the addition of adenine nucleotides to form the poly(A) tail. The poly(A) tail helps protect the mRNA from degradation and enhances its stability.
3. Splicing: This is a process where introns are removed from pre-mRNA to form mature mRNA. Splicing is carried out by a complex of proteins and small RNAs known as the spliceosome.
The removal of introns ensures that the coding regions or exons are spliced together to form a continuous reading frame that can be translated to form proteins.
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Scientist have evidence that media right have come from which location
Answers
Answer:
Please mark as brainlist.
Explanation:
Scientific evidence for warming of the climate system is unequivocal.