Question

what determines whether a gamete receives an extra chromosome in nondisjunction? size of the chromosomes involved temperature variations random chance genetic predisposition

Explanation:

Nondisjunction is the failure of chromosomes to separate properly during cell division. Whether a gamete gets an extra chromosome in nondisjunction is due to random chance during the separation process, not chromosome size, temperature, or a simple genetic predisposition in this context.

Answer:

C. random chance