Gene control mechanisms, or "gene expression," control .

A kinds and amounts of proteins in a cell
B DNA replication
C mRNA translation
D protein synthesis

10.Gene regulation in eukaryotes
A usually involves operons.
B is simpler than in prokaryotes.
C allows for cell specialization.
D includes the action of an operator region.

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4

If a young male's body is just beginning the process of producing sperm, when is it likely that he would ejaculate mature, viable sperm"