Answered

if nondisjunction occurs during meiosis,

Aonly two gametes may form instead of four.
Bsome gametes may have an extra copy of some genes.
CThe gamete cannot join another to form an organism.
Dthe gametes redistribute chromosomes after meiosis.

Verified Answer :

it is b ,some gametes may have an extra copy of some genes.

Answer:

B. some gametes may have an extra copy of some genes.

Explanation:

Nondisjunction is failure of segregation of chromosome during anaphase. It can occur during anaphase I or anaphase II of meiosis. Nondisjunction during anaphase I of meiosis would result in presence of both chromosomes of homologous pair in one daughter cell resulting in presence of extra copy of some genes. Similarly, non disjunction at anaphase II leads to presence of extra chromosome in some daughter cells.

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