According to mendel’s law of segregation, what happens to chromosomes during meiosis?
a. heterozygous chromosome pairs undergo crossing over.
b. homozygous chromosome pairs attach to their centromeres.
c. homologous chromosome pairs line up in the center of the cell.
d. homologous chromosome pairs pull away from each other.

4. how does a phospholipid behave in water? the phosphate head does not mix with water; the fatty acid tails do. the phosphate head and the fatty acid tails mix with water. the phosphate head and the fatty acid tails do not mix with water. the phosphate head mixes with water; the fatty acid tails do not.

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

The reactions that occur in the ribosome, where amino acids are combined to form proteins are anabolic or catabolic?