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antiseptic1488 [7]
3 years ago
5

What is an example of a chromosomal nondisjunction that occurs during the first division?

Biology
1 answer:
aliya0001 [1]3 years ago
4 0
Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during cell division. There are three forms of nondisjunction: failure of a pair of homologous chromosomes to separate in meiosis I, failure of sister chromatids to separate during meiosis II, and failure of sister chromatids to separate during mitosis.[1][2][3] Nondisjunction results in daughter cells with abnormal chromosome numbers (aneuploidy).

Calvin Bridges and Thomas Hunt Morgan are credited with discovering nondisjunction in Drosophila melanogaster sex chromosomes in the spring of 1910, while working in the Zoological Laboratory of Columbia University.[4]

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These are the answers to the following questions:

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7 0
3 years ago
Please help.What would you expect to occur if you were to repeatedly lift 25 pounds over your head for 1 minute,
nordsb [41]

Answer:

Strengthen the arms.

Explanation:

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3 0
3 years ago
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Umnica [9.8K]

Answer:

Does your bio textbook show you?

4 0
2 years ago
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777dan777 [17]
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4 0
2 years ago
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Inga [223]

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