Question

PLEASE HELP WITH THIS ONE QUESTION

What statement about the inheritance of mitochondrial DNA is true?

A) The sperm cell donates most of the material in the cytoplasm to the zygote, including mitochondrial DNA.

B) The egg and sperm cells contribute equal amounts of mitochondrial DNA to the zygote.

C) The egg cell donates most of the material in the cytoplasm to the zygote, including mitochondrial DNA.

D) The sperm cell donates most of the DNA in the nucleus to the zygote, including mitochondrial DNA.

Answer 1

The answer should be C

Step-by-step explanation:

The egg contributes all the cytoplasm and organelles to the zygote. The sperm only contributes one set of chromosomes.

The typical sperm midpiece contains approximately 50-75 mitochondria with one copy of mtDNA in each. This represents an 8- to 10-fold decline in copy number during spermiogenesis.