The correct answer is: A. Nondisjunction
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Answer:
A recessive trait is a trait that is expressed when an organism has two recessive alleles, or forms of a gene. Dominant alleles mask the effects of recessive alleles, so a recessive trait is only expressed when an organism has two recessive alleles for a gene.
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Night blindness is caused by vitamin A
The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins.
