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4 votes

Why is the process of releasing gametes in females different from that of males?

Each individual optimizes the probability of offspring carrying their genes. Anatomical and behavioral optimization between sexes contribute to distinct strategies used between different sex. I guess ...
cc12amu's user avatar
  • 126
4 votes
Accepted

Considering Two Genes, Are There Only Two Possible Outcomes for the Four Gametes Produced After Meiosis, Regardless of Independent Assortment?

A "single meiotic event" would include both meiosis I and meiosis II. So, if you start with an AaBb mother cell prior to any phase of meiosis, then observe one of the resulting final ...
Darlingtonia's user avatar
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3 votes

What are the $2^{23}$ combinations in gamete fusion?

The calculation is actually quite simple. Each gamete can contribute one of two sister chromatids for each chromosome, so that in humans (with 23 distinct chromosomes) the number of possible ...
David's user avatar
  • 25.9k
2 votes

Doesn't meiosis form two pairs of similar cells and two pairs of opposite cells?

Great question - I think there are two misconceptions in your question that are interfering with your understanding. First, crossing-over occurring at just the "tips" is just for clarity in textbooks ...
Bryan Krause's user avatar
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2 votes

What are the $2^{23}$ combinations in gamete fusion?

Shouldn't it be that there are 2^23 different types of gametes possible from a single individual with 23 chromosomes? The math behind it is as follows: Case 1: Only one chromosome. Let's say, from the ...
Tanishq Meena's user avatar
2 votes
Accepted

Size ratio of Drosophila bifurca gametes and implication for the definition of sex

Relative size of gametes The relative sizes of the sperm and eggs of D. bifurca can be seen in the scanning electron micrograph below, taken from a 2006 Nature paper by Bjork and Pitnick. The left-...
David's user avatar
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2 votes
Accepted

How many of the four meiotic daughter chromosomes of a homologous pair can be recombinant via crossover?

There can be and often is more than one crossover per chromosome in meiosis, but how many crossovers occur can depend on the species, sex, age, environment, and which particular chromosome is ...
tyersome's user avatar
  • 5,598
1 vote

Can Meiosis 2 be called as mitosis?

Meiosis 2 can not be called mitosis. You correctly recognized there are similarities between Meiosis 2 and mitosis. In other contexts, however, there are further differences. For instance Mitosis ...
tsttst's user avatar
  • 1,597

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