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Kipish [7]
3 years ago
13

A biologist measures the allele frequencies of pea plants in a very controlled environment. The plants can either have a dominan

t tall allele (T) or a recessive short allele (t). Which of the following is a reason that this population is not at Hardy-Weinberg equilibrium?
A. The pea plants are mated at random.
B. Both alleles ensure equal survival.
C. One pea plant mutates to have a new allele.
D. Every pea plant reproduces exactly once.
Biology
2 answers:
kolbaska11 [484]3 years ago
8 0
The answer is One pea plant mutates to have a new allele.


Ivenika [448]3 years ago
5 0

Answer:

The correct answer would be option C.

Hardy-Weinberg equilibrium refers to the equilibrium of the gene frequencies in a population from generation to generation in the absence of evolutionary influences.

The Hardy-Weinberg assumptions for this equilibrium are:

  • Random mating
  • No mutation
  • No natural selection
  • No emigration and immigration  
  • Large population size

Thus, the formation of a new allele by mutation would disturb the Hardy-Weinberg equilibrium.

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Answer/Explanation:

Types of reproductive isolation include: temporal, ecological, mechanical, and behavioural.

A snail with a flat disc-like shell will not be able to mate with a snail having a conical shell - this is an example of mechanical isolation, where the animals are physically unable to mate due to incompatible body shapes and sizes.

The reproductive organs of male bush babies do not match with the reproductive organs of females of other bush baby species. - this is another example of mechanical isolation, as the sexual organs will physically not allow reproduction between these species

The mating call of a cricket is not recognized by a cricket of other species - this is an example of behavioural isolation, which results from incompatible mating rituals. I.e. the animals do not respond to each others mating behaviours

The signals sent by a male firefly are not recognized by the female firefly of other species. - this is also an example of behavioural isolation.

Temporal isolation is where species cannot interact because they do not have the same mating seasons or are not active at the same type of day. ?Ecological isolation occurs when two species do not come into physical contact to one another because they access different areas of the habitat. E.g. mating zones, food sources or nesting sites.

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3 years ago
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Explanation:

( translation: prophase, metaphase, anaphase,and telophase)

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