petersoapes
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What determines the sex of hybrid offspring?
1 votes

I am detecting a bit of confusion in you wording of Haldane's rule. Haldane's rule makes predictions on the fertility of offspring from an inter-specific cross, not the sex-ratio of the offspring from ...

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Constant or variable number of chiasmata during recombination?
2 votes

There is a large amount of variation in the distribution and number of chiasmata or crossing overs (COs). The total number of chiasmata per cell can vary within the same organism. Where chiasmata ...

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Role of drift in evolution of sexually dimorphic traits
0 votes

I wrote my question asking about the relationship of drift in the evolution of SD (sexual dimorphism), but after reading up more on the subject I've determined there are at least two parameters to ...

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How quantitative is the theory of evolution right now?
Accepted answer
4 votes

Can we tell if a species will develop a specific character, based on the environment they're in? This is a major part of what quantitative genetics does. Or more detailedly, quantitative genetics can ...

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tetrads in meiosis are held together by what
1 votes

It may help to think of the question in this way. Within a tetrad (that is 2 bivalents) there are 4 strands of DNA (really chromatin). Only the 2 inside strands are held together by the chiasmata. The ...

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How does the molecular machinery choose where to cut a chromosome for recombination?
0 votes

While all the answers above are correct and insightful for the process of DSBs formation, recombination has another layer of complexity. Mediating proper chromosomal segregation is more likely the ...

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Are chromosomes from each parent split between gametes with equal probability (esp. in humans)?
1 votes

As far as we know, chromosomes tend to be equally distributed across normal gameteogenesis, following Mendel's second law of independent assortment. However some versions of DNA repair and chromosomal ...

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Why doesn't recombination occur in male Drosophila?
3 votes

This phenomena is known as achiasmy, where recombination is absent in one sex in a species. The Haldane Huxley rule states that in achiasmic species, the sex without recombination will always be the ...

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