SOMEONE PLEASE HELP ME!
The diagram shows the process used in gene therapy.
At this location, which label belongs in the area marked X?

a) normal allele
b) mutated gene
c) copied allele
d) inserted gene

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

According to this food web which of the following would be considered primary consumers

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food