False, the chemical make up hardly ever changes, The physical property is the one that changes
Answer:
nucleus
Explanation:
eukaryotic has a nucleus, prokaryotic does not
The phenotypic outcome will be pink. Incomplete dominance means none of the traits are dominant, therefore they will not mask each other. As a result, they will produce a new trait. In the case of the snapdragons, red + white = pink.
Genotypic wise, all of the offspring will be heterozygous.
Answer:
D. Selection has led to decreases in the size of fish at the age of reproductive maturity.
Explanation:
The larger body size of the fishes is not an adaptive trait as it reduces the survival chances of these fishes. The process of natural selection tends to increase the frequency of the traits that increase the survival fitness of the organisms. Here, the fishes with smaller body size at the reproductive age have greater chances of survival and would reproduce more to leave more progeny. Over the generations, the selection pressure would increase the proportion of fishes that are smaller during reproductive age.
Answer:
secrete a cytokine that triggers apoptosis
Explanation:
Cytotoxic T cells secrete granzymes and perforins when targeting cells. Additionally they secrete cytokines such as IFN-, TNF-α and TNF-β that act to activate macrophages and help kill infected cells.
