What is critical to the synthesis of thyroxin, the hormone that controls the rate of oxygen use by cells, and whose deficiency causes the condition known as goiter?

d. in sexual reproduction, offspring have more chromosomes than

either parent.

asexual reproduction results in offspring which are genetically the same as the parent organism (not counting a rare mutation). sexual reproduction produces a random mixture of the genetics derived from both parents

explanation:

option a and d is the correct answer

i hope this u

plz mark as the brainliest answer