Postzygotic isolating mechanisms is Group of answer choicesNonewhich prevent the proper functioning of zygotes after they formwhich prevent the formation of zygotes,both a & b
Question
Postzygotic isolating mechanisms is Group of answer choicesNonewhich prevent the proper functioning of zygotes after they formwhich prevent the formation of zygotes,both a & b
Solution
Postzygotic isolating mechanisms are those which prevent the proper functioning of zygotes after they form. These mechanisms come into play after fertilization has occurred, and they act to reduce the viability or reproductive capacity of the hybrid offspring. Examples of postzygotic isolating mechanisms include hybrid inviability (where the hybrid zygote does not develop properly), hybrid sterility (where the hybrid is sterile), and hybrid breakdown (where first-generation hybrids are viable and fertile, but further hybrid generations are inviable or sterile). So, the correct answer is "which prevent the proper functioning of zygotes after they form".
Similar Questions
In isolating mechanisms a hybrid zygote is formed, but it is unable to survive or reproduce due to developmental or genetic problems.
When populations are only partially reproductively isolated, which of the following may occur?Multiple choice question.Postzygotic isolating mechanisms will act to prevent the survival and reproduction of hybrid offspring if a zygote is formed.Even though individuals are interbreeding, prezygotic and postzygotic isolating mechanisms ensure that hybrids do not survive and reproduce.Prezygotic isolating mechanisms will act to prevent the formation of a zygote if postzygotic isolating mechanisms fail.Despite prezygotic and postzygotic isolating mechanisms, some individuals may survive and reproduce.Need help? Review these concept resources.
_____ unite during sexual reproduction to produce a diploid zygote.Group of answer choicesGametesBody cellsSomatic cellsNext
Hybrid inviability and hybrid infertility are two examples of Blank______.Multiple choice question.postzygotic isolating mechanismsprezygotic isolating mechanismsnon-adaptive isolating mechanismsnon-zygotic isolating mechanisms
An allele that exerts its phenotypic effect in a heterozygote.Group of answer choicesrecessivedominant
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