Questions from Genetics


Q: What is the difference between the X-Y and X-

What is the difference between the X-Y and X-0 systems of sex determination?

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Q: A cell has four pairs of chromosomes. Assuming that crossing over

A cell has four pairs of chromosomes. Assuming that crossing over does not occur, what is the probability that a gamete will contain all of the paternal chromosomes? If n equals the number of chromoso...

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Q: With regard to question C13, how would the phenomenon of crossing

With regard to question C13, how would the phenomenon of crossing over affect the results? In other words, would the probability of a gamete inheriting only paternal chromosomes be higher or lower? Ex...

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Q: Eukaryotic cells must sort their chromosomes during mitosis so that each daughter

Eukaryotic cells must sort their chromosomes during mitosis so that each daughter cell receives the correct number of chromosomes. Why don’t bacteria need to sort their chromosomes?

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Q: Why is it necessary for the chromosomes to condense during mitosis and

Why is it necessary for the chromosomes to condense during mitosis and meiosis? What do you think might happen if the chromosomes were not condensed?

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Q: Nine-banded armadillos almost always give birth to four offspring that

Nine-banded armadillos almost always give birth to four offspring that are genetically identical quadruplets. Explain how you think this happens.

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Q: A diploid species has four chromosomes per set for a total of

A diploid species has four chromosomes per set for a total of eight chromosomes in its somatic cells. Draw such a cell as it would look in late prophase of meiosis II and prophase of mitosis. Discuss...

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Q: Explain why the products of meiosis may not be genetically identical,

Explain why the products of meiosis may not be genetically identical, whereas the products of mitosis are.

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Q: What is a homolog? With regard to genes and alleles,

What is a homolog? With regard to genes and alleles, how are homologs similar to and different from each other?

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Q: The period between meiosis I and meiosis II is called interphase II

The period between meiosis I and meiosis II is called interphase II. Does DNA replication take place during interphase II?

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