5. X and Y chromosomes as homologous pairs: In humans, the XX pairing of the 23rd pair of chromosomes generally gives rise to phenotypic females, while the XY pairing generally gives rise to phenotypic males. Despite having very different shapes and genetic content, the X and Y chromosomes of humans always pair together during meiosis and mitosis. in humans, the gene largely responsible for the male phenotype is the SRY а. gene and it is found on the Y chromosome. However, genetic females (XX) can on occasion have phenotypic traits attributable to the SRY gene. Please explain how this might happen during meiosis. b. Explain why genetic females with genetically encoded male phenotypic traits must (due to the presence of the SRY gene) have received the mutant X chromosome from their father.

Biology: The Dynamic Science (MindTap Course List)
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Chapter11: Meiosis: The Cellular Basis Of Sexual Reproduction
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Problem 12TYK: Discuss Concepts One of the human chromosome pairs carries a gene that influences eye color. In an...
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5. X and Y chromosomes as homologous pairs:
In humans, the XX pairing of the 23rd pair of chromosomes generally gives rise to phenotypic
females, while the XY pairing generally gives rise to phenotypic males. Despite having very
different shapes and genetic content, the X and Y chromosomes of humans always pair
together during meiosis and mitosis.
in humans, the gene largely responsible for the male phenotype is the SRY
а.
gene and it is found on the Y chromosome. However, genetic females (XX) can on
occasion have phenotypic traits attributable to the SRY gene. Please explain how this
might happen during meiosis.
b.
Explain why genetic females with genetically encoded male phenotypic traits
must (due to the presence of the SRY gene) have received the mutant X chromosome
from their father.
Transcribed Image Text:5. X and Y chromosomes as homologous pairs: In humans, the XX pairing of the 23rd pair of chromosomes generally gives rise to phenotypic females, while the XY pairing generally gives rise to phenotypic males. Despite having very different shapes and genetic content, the X and Y chromosomes of humans always pair together during meiosis and mitosis. in humans, the gene largely responsible for the male phenotype is the SRY а. gene and it is found on the Y chromosome. However, genetic females (XX) can on occasion have phenotypic traits attributable to the SRY gene. Please explain how this might happen during meiosis. b. Explain why genetic females with genetically encoded male phenotypic traits must (due to the presence of the SRY gene) have received the mutant X chromosome from their father.
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