Explain why mitosis is normal in cells containing both horse and donkey chromosomes, but the mixed set of chromosomes interferes with meiosis.

Biology Today and Tomorrow without Physiology (MindTap Course List)
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Chapter9: Patterns Of Inheritance
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A mule is the offspring of a horse and a donkey. A donkey sperm contains 31 chromosomes and a horse egg
contains 32 chromosomes, so the zygote (1-cell embryo) contains a total of 63 chromosomes. The zygote
develops normally, as the combined set of chromosomes is not a problem in mitosis. However, a mule is
sterile; meiosis (and, therefore, gamete production) cannot occur normally in the gonads.
Explain why mitosis is normal in cells containing both horse and donkey chromosomes, but the mixed set of
chromosomes interferes with meiosis.
Transcribed Image Text:uwsp canvas - Search O Thought OQuestion 2 uwstp.instructure.com/courses/479599/assignments/4335506 A mule is the offspring of a horse and a donkey. A donkey sperm contains 31 chromosomes and a horse egg contains 32 chromosomes, so the zygote (1-cell embryo) contains a total of 63 chromosomes. The zygote develops normally, as the combined set of chromosomes is not a problem in mitosis. However, a mule is sterile; meiosis (and, therefore, gamete production) cannot occur normally in the gonads. Explain why mitosis is normal in cells containing both horse and donkey chromosomes, but the mixed set of chromosomes interferes with meiosis.
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