Can a haploid cell initiate and complete meiosis? why or why not?.
Answers
A haploid cell cannot complete meiosis, but it can start the process of meiosis. During meiosis, haploid cells divide to form two haploid daughter cells, each with half the genetic information of the parent cell. The meiotic process includes two stages: meiosis I and meiosis II.
In meiosis I, the haploid cell divides into two haploid daughter cells. The genetic material is duplicated and then separated into the two daughter cells. Meiosis I produces two cells, each with a copy of each chromosome.In meiosis II, the two haploid daughter cells each divide into two haploid granddaughter cells. The genetic material is further separated, with each of the four cells ending up with a single copy of each chromosomes.
No, haploid cells cannot complete meiosis because meiosis requires diploid cells with homologous chromosomes to exchange genetic material during recombination. This process helps to ensure genetic variation in offspring. Haploid cells lack homologous chromosomes, so they cannot undergo recombination and therefore cannot complete meiosis.Haploid cells, however, can initiate meiosis by duplicating their genetic material and beginning the first stage of meiosis. During meiosis I, the haploid cell divides into two haploid daughter cells. The genetic material is duplicated and then separated into the two daughter cells. Meiosis I produces two cells, each with a copy of each chromosome. These two cells can then undergo meiosis II, producing four haploid cells in total.Meiosis is a vital process for sexual reproduction, allowing for the production of genetically diverse offspring. Haploid cells play an important role in meiosis by initiating the process, but they cannot complete it on their own.
A haploid cell can initiate meiosis, but it cannot complete the process on its own. Meiosis requires diploid cells with homologous chromosomes to undergo recombination, which haploid cells lack. However, haploid cells can still contribute to the production of genetically diverse offspring by initiating the meiotic process.
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Related Questions
what prevents coral reefs from surviving below the euphotic zone? group of answer choices high water density high pressure inadequate sunlight saline water damage from storms
Answers
Inadequate sunlight prevents coral reefs from surviving below the euphotic zone.
The majority of coral reefs are found nearby in shallow water. Due of this, they are particularly susceptible to the negative consequences of human activity, both directly via the exploitation of reef resources and indirectly through the effects of nearby human activities on land and in the coastal zone. The social, cultural, and economic fabric of local coastal communities is intricately intertwined with many of the human activities that harm coral reefs.
Numerous local risks to coral reefs exist, such as:
Physical harm or devastation caused by recreational overuse, coastal development, dredging, quarrying, harmful fishing methods and equipment, boat anchors and groundings, etc (touching or removing corals).
Land-based pollution that makes its way into coastal waterways There are several pollution kinds and sources from land-based activities.
1.sedimentation
2. Nutrients
3. pathogen
4. Toxic substances
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Help I’ll be your friend and give you thanks and brainliest
Answers
Answer:
B
Explanation:
Answer:
The answer is B
Explanation:
while oxegen is the reactant of cellular resperation it is also a product of photosynthesis
Most phenotypic traits—features of the organism that we can observe—are not easy to put into a Punnet Square. Give at least two reasons, or factors, that make most phenotypic traits complicated. How, then, can we measure these traits?
Answers
Most phenotypic traits are complex due to polygenic inheritance and environmental influences.
Phenotypic traits often result from the combined effects of multiple genes (polygenic inheritance) and can be influenced by environmental factors. Punnett Squares, which illustrate single gene pair inheritance, are not suitable for capturing the complexity of such traits. Additionally, environmental factors can interact with genetic factors, leading to variations in trait expression.
To measure complex phenotypic traits, alternative approaches are used. Quantitative measurements, such as height or weight, provide precise numerical values. Statistical analysis helps identify patterns, correlations, and heritability estimates in populations. It involves studying large sample sizes and employing statistical models to understand the contributions of genetic and environmental factors. Molecular genetics advancements have further enhanced our ability to study complex traits at the genetic level.
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Which is NOT a function of membrane proteins?
A-Hormone binding sites
B-Channels and pumps for transport
C-Cell adhesion
D-Protein synthesis
Answers
The correct answer of the following question (D) which is protein synthesis.
A membrane protein is a protein molecule that is attached to cell or organelle, and it may also be associated with the membrane of a cell or an organelle.
Protein membrane is found in cell membrane which helps in intercellular transport of ions across the membrane, mobility of the cell , anchoring cells to their environment for nutrition, cell to cell recognition, carrying out several enzymatic reaction.
So, protein membrane provide hormones, binding sites channels and pumps for transport, cell adhesion , but it did not synthesis protein.
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Select the correct answer from each drop-down menu.
The lac operon in E.coli regulates genes that code for enzymes required for breakdown of lactose. The lac operon is
operon in that is activated in the presence of
Answers
Answer:
The lac operon in E.coli regulates genes that code for enzymes required
for breakdown of lactose. The lac operon is an inducible operon that is
activated in the presence of lactose.
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HELP ASAP I NEED THIS ANSWER!!! A scientist is observing a worm that was found inside a host. The worm has an outer body that is smooth and soft.
Which worm is the scientist least likely to be observing?
an earthworm
a pinworm
a hookworm
a tapeworm
Answers
Answer: A
Explanation: I took the test
Answer:
A cuz my notes say so
Explanation:
stimuli are carried to the brain from the periphery along the efferent neurologic tract.
T/F
Answers
Stimuli are carried to the brain from the periphery along the efferent neurologic tract. The statement is False.
Stimuli are carried to the brain from the periphery along the afferent neurologic tract. The efferent neurologic tract carries signals from the brain to the periphery.
The PNS is further divided into two main divisions: the somatic nervous system and the autonomic nervous system.
The somatic nervous system controls voluntary movement, while the autonomic nervous system controls involuntary movement, such as heart rate, breathing, and digestion.
The somatic nervous system is further divided into two main parts: the afferent division and the efferent division. The afferent division carries information from the periphery to the CNS, while the efferent division carries information from the CNS to the periphery.
The afferent division of the somatic nervous system is responsible for carrying sensory information from the skin, muscles, and joints to the CNS. This information is used by the CNS to create a map of the body and to control movement.
The efferent division of the somatic nervous system is responsible for carrying motor information from the CNS to the muscles. This information is used by the CNS to control voluntary movement.
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Which statement is a valid inference based on the information in the diagram? a.) species A is the common ancestor of all life on Earth b.) species D is more closely related to species E than to species F c.) species B is the ancestor of species F d.) species C is the ancestor of species that exist at the present time
Answers
A valid inference base on the common ancestry diagram is species D is more closely related to species E than to species F. Option B
What is meant by common ancestry?A species can be said to be a common ancestor of all life on Earth when it is the most recent common ancestor of all living things.
This means that all living things share a common ancestor that is more recent than any other common ancestor.
The diagram shows that species D and E share a more recent common ancestor than species D and F. This means that species D and E are more closely related to each other than to species F.
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How is mitosis different in plants and animals?
Answers
Answer:
tyzhdtyhzftgh
Explanation:
xftghszertryh
Answer:
Explanation:
The most important and observable difference in the plant animal cells mitosis is the cytokinesis. In plants a new cell plate is formed between the daughter cells for the future cell wall, while in animal cells the cell membrane constricts to separates the parent cell into daughter cells.
Which sentence supports the statement that complex, multicellular organisms are made up of specialized cells that each perform different functions for the body?
A.
Human liver cells make proteins that promote homeostasis that neurons do not.
B.
Different species of bacteria have different shapes and structures to their cells.
C.
The DNA in the cell nucleus of chimpanzees and humans are 98% identical.
D.
Prokaryotes do not have nuclei, but they can still carry out the basic functions of life.
Answers
Answer:
A
Explanation:
Human liver cell make proteins that promote homeostasis that neurons don't have.
Homeostasis is the regulation of an internal steady environment.
help me quick please i really need this
Answers
Answer:
White Dwarfs
Explanation:
White Dwarfs usually have stars that are between 8,000 K and 40,000 K.
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Parenteral includes any routes other than the _____.
Answers
Parenteral includes any routes other than the gastrointestinal (GI) route. The choice of route depends on the medication being administered, and the desired outcome.
The GI route involves the administration of medications or nutrients through the mouth, and the drug or nutrient is then absorbed by the digestive system. Parenteral routes, on the other hand, involve administration of medications or nutrients through routes other than the GI tract, such as intravenous (IV), intramuscular (IM), subcutaneous (SC), intradermal (ID), intra-arterial, and intrathecal. Parenteral routes are often used when oral administration is not possible or effective, or when rapid drug delivery is necessary. Intravenous administration provides the most rapid onset of action, while other routes, such as intramuscular and subcutaneous, provide a slower onset of action.
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true or false the skeleton supports the body's softer tissue
Answers
The skeleton gives shape for the body, allows movement, support and protect the organs, produce bllod cells, and stores minerals. Being a true fact that it supports the body's softer tissues.
Which epidermal cells act as sensory touch receptors?.
Answers
Look at the image above. How did endosymbiosis impact the structural differences between bacteria, animals, plants, and fungi? CLAIM: EVIDENCE: REASONING:
Answers
Answer:
What role did endosymbiosis play in the evolution of eukaryotes? Endosymbiosis led to the evolution of eukaryotic cells with mitochondria and chloroplasts. This kind of natural selection led to the evolution of eukaryotic cells and the plants and animals we see today.
Explanation:
Endosymbiosis is important because it is a theory that explains the origin of chloroplast and mitochondria. It is also a theory that explains how eukaryotic cells came to be. DNA, RNA, Ribosomes and Protein Synthesis
This provided the first substantial evidence for the endosymbiotic hypothesis. It was also determined that mitochondria and chloroplasts divide independently of the cell they live in.
A population of crabs living on a sandy beach exhibits three colors: dark brown, light
brown, and speckled. The genotypes for these colors are BB for dark brown, bb for light
brown, and Bb for speckled. If a dark brown crab were crossed with a light brown crab,
what would be the probable phenotypic ratio of their offspring?
Answers
Answer:
100% of the progeny will be speckled
Explanation:
Available data:
Three colors: dark brown, light brown, and speckled.The genotypes for these colors are BB for dark brown, bb for light brown, and Bb for speckled.Cross: dark brown crab with a light brown crab
Parentals) BB x bb
Gametes) B B b b
Punnett square)
B B
b Bb Bb
b Bb Bb
F1) Genotype:
4/4 = 100% of the progeny will be heterozygous for the trait, Bb
Phenotype:
4/4 = 100% of the progeny will be speckled
The kidney nephrons filter around 125cm3 of blood in one minute.
Calculate the total volume of blood filtered by the kidney nephrons in 24 hours.
Answers
Answer:
180,000 volume of blood
Explanation:
So the nephrons filter 125 cm^3 of blood in 1 minute so when finding 24 hours you know 1 hour has 60 minutes so multiply 125 by 60 to get 7500 which is the blood filtered in 1 hour and since you need 24 hours multiply this 7500 by 24 to get your final answer of 180,000 volumes of blood filtered.
Aa lai với â tỉ kệ kiểu gen
Answers
Answer:
i not understand that sorry pls rebond
Answer:
what is this I cannot understand
What organelle wouldn’t have a job if the smooth and rough ER didn’t work?
Answers
Answer: The Golgi apparatus.
Explanation: I believe it is the Golgi apparatus as the Rough ER and Smooth ER create proteins and sort them in to piles before sending to the Golgi apparatus to deliver.
The Smooth ER and Rough ER are like the suppliers while the Golgi apparatus is like the transporter.
Remember: Proteins have many functions and are needed severely to perform those actions that without the Golgi apparatus, those proteins wouldn’t be able to be transported.
Scientific researchers discovered agents that behaved like bacteria causing diseases such as rabies and hoof-and-mouth, but were much smaller. It became the general view that viruses were biologically "alive." This perception changed in 1935 when the tobacco mosaic virus was crystallized and scientists demonstrated that the particles lacked any mechanisms necessary for metabolic function. It was determined that viruses consisted of a nucleic acid, DNA or RNA, surrounded by a protein shell. Viruses exist in two distinct states. When not in contact with a host cell, the virus remains entirely dormant. During this time there are no biological activities occurring and the virus is nothing more than a static organic particle. Viruses can remain like this for extended periods of time, waiting to come into contact with the appropriate host. When the virus comes into contact with a host, it becomes active, reacts to its environment and/or host and directs its efforts toward self-replication. The viral goal now is to produce more viruses to attack host cells.
The characteristics of life: many are listed in the passage describing viruses. One important piece of evidence arguing against life for viruses is implied by the passage; not stated directly. Viruses are not living, because, as implied by the passage, they
A. Lack a nucleus
B. Have no DNA
C. Are not cellular
D. Do not reproduce
Answers
According to the given passage, viruses are not living because they (C) do not have a cellular organization.
Viruses lack a cellular organization which is a basic feature of all living organisms. A virus is a nucleoprotein, with the genetic material enclosed by a protein coat. The genetic material could be either DNA or RNA. The genetic material is responsible for causing infection in the host.
Viruses are inactive outside their specific host cell. They are non-cellular organisms. They possess an inert crystalline structure outside the living host cell. The protein coat of a virus, i.e. capsid, serves as a protective covering for the genetic material.
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This explains how Wegner deduces what Pangaea looked like.
Answers
Wegener supported his theory by means of demonstrating the Pangaea and geological similarities among continents. South America and Africa contain fossils of animals observed simplest on the ones two continents, with corresponding geographic levels.
Pangaea Wegener was satisfied that every one of Earth's continents have been as soon as a part of a good-sized, single landmass referred to as Pangaea. Wegener, educated as an astronomer, used biology, botany, and geology to describe Pangaea and continental drift.
The rock formations of eastern North the USA, Western Europe, and northwestern Africa were later found to have a not unusual starting place, and they overlapped in time with the presence of Gondwanaland. together, those discoveries supported the life of Pangea.
Wegener showed that positive styles of rocks on the continents would match with others in some other continents. What did Wegener realize approximately the oldest rocks on the African and South American continents? That they had been connected collectively whilst the continents were arranged to shape Pangaea.J
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Name the type of mutation
Answers
Answer:
Martian
Explanation:
What is the difference between monotremes marsupials and placental mammals?
Answers
Here is your answer......
Explanation:
Monotremes are mammals that lay eggs. Monotremes are warm blooded with a fast metabolism. They have hairy bodies to keep warm.
Marsupials are mammals that give birth to live young. These mammals have a pouch where their young grow and develop. Marsupials are hairy, warm blooded, and produce milk. One of the biggest differences between marsupials and placental mammals is that marsupials give birth quite early and rely less on the nourishment of the placenta. Some examples of marsupials are kangaroo and opossums.
Placental mammals are mammals that give birth to fully developed live young. They differ from marsupials in that the baby spend more time being nourished in-utero by the placenta. These mammals are hairy and warm blooded as well. Some examples are mice, rats, and bats
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researchers recorded that a certain bacteria population declined from 270,000 to 200 in 36 hours. at this rate of decay, how many bacteria will there be in 18 hours? round to the nearest whole number
Answers
researchers recorded that a certain bacteria population declined from 270,000 to 200 in 36 hours. at this rate of decay, 3985200 bacteria will there be in 18 hours
What is the rate of decay?The rate of radioactive decay, also known as the rate of decay, tells us how quickly the decaying nuclei change over time. The activity of the unstable atom will be revealed if the decay rate is taken as an absolute value.
Given that,
A = 200
A₀= 270000
K=?
t= 36 hours
A=A₀\(e^k\)t
Substitute the values in the formula.
200 = 270000 \(e^k\) 36
Solve for k.
Divide each side by 270000.
7.41 × 10⁻⁴ = ek 36
Take the natural log of each side.
or, ln (7.41 × 10⁻⁴ ) = lnek 36
or, ln (7.41 × 10⁻⁴ ) =36 k lne
or, ln (7.41 × 10⁻⁴ ) = 36 k
or, -7.21 = 36 k
or, k = - 0.2003
We use this rate of growth to predict the number of bacteria there will be in 18 hours.
A=A₀\(e^k\)t
Putting the values we get -
or, A = 270,000 × (0.82) × (18)
or, A = 3985200
At this rate of decay, researchers can expect 3985200 bacteria.
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Please solve this question
Answers
Answer:
The correct answer to the question would be B
features of euglena as a plant
Answers
Answer:
The Features of Euglena are:
1. Euglena has chloroplasts that allow it to photosynthesize.
2. Primitive eye-spot which detects light.
3. Euglena lacks a cell wall.
Explanation:
What would happen within a cell if it had a premature termination codon in the gene encoding the ER protein translocator?
A. There would be no transmembrane proteins found in any membranes in the cell B.Nonsense mediated decay (NMD) could interfere with translation of the mRNA encoding the ER protein translocator C. N-linked glycosylation on proteins usually translocated into the ER would not occur D. All of the above E B and C are correct
Answers
Nonsense-mediated decay (NMD) can easily interfere with the translation of the mRNA which is responsible for encoding the ER protein translocator. Therefore, option "B" is correct. The genetic code consists of three STOP codons or nonsense codons which are UGA, UAG, and UAA.
These codons are frequently referred to as termination codons or nonsense codons. They do not encode any amino acid. Nonsense codon at the end of the polypeptide chain during translation is responsible for the end. Inserting a premature terminal codon (PTC) into a quality exon can code for incorrect mRNA, for example, cytoplasmic occasion.
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HELP LLEASE IM ALMOST SO TIRED
Answers
Explanation: Randomization minimizes the influence of bias by mixing up the probability of the results. It does not favor any one side.
which term means pertaining to body organs enclosed within a cavity, especially the abdominal organs?
Answers
The term pertaining to body organs enclosed within a cavity, especially the abdominal organs, is "visceral."
The term that means pertaining to body organs enclosed within a cavity, especially the abdominal organs is visceral. Visceral is an adjective that is used to describe the internal organs of the body that are located within cavities.
These organs are usually found within the abdominal cavity or thoracic cavity. Examples of visceral organs include the heart, lungs, liver, spleen, and intestines.
Visceral is used to describe anything that pertains to these organs. It can also be used to describe an emotional or instinctive response that is deep or intense.
For example, someone might experience a visceral reaction to a traumatic event. This means that they are feeling a strong emotional response that is coming from deep within them.
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the brain worm parasite is commonly found in white-tailed deer with little impact, but can be transmitted via intermediary hosts to moose with often fatal consequences. this is an example of exploitative competition. interference competition. apparent competition. allelopathic competition.
Answers
The brain worm parasite is an example of interference competition. Interference competition occurs when two or more species compete with each other for the same resources or space. Option B .
In the case of the brain worm parasite, it is competing with other organisms for space and resources within the host animal's body. The parasite is able to survive and reproduce within the host, while other organisms may be unable to do so due to competition for resources.
Overall, interference competition is a type of competition in which species compete with each other for the same resources or space, and it can have significant impacts on the populations of both the competing and the affected species.
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Full Question ;
the brain worm parasite is commonly found in white-tailed deer with little impact, but can be transmitted via intermediary hosts to moose with often fatal consequences. this is an example of
exploitative competition.
interference competition.
apparent competition.
allelopathic competition.