Sister chromatids select one: a. are exact copies of one chromosome that are attached to each other b. are two different chromosomes attached to each other c. arise from the centrioles d. are broken down by mitosis e. are chromosomes that carry different genes

There are specialized producers that live in warm water vents deep in the ocean. these producers do not per-form from photosynthesis, but instead perform a similar process with iron and other chemicals. why do you think these producers use this process instead of photosynthesis?

Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure