One of the jobs of lipids is to act as chemical messengers. This job is particularly important for the function of the A. heart.
B. brain.
C. lungs.
D. stomach.

Anita thinks that she has heterozygous alleles for red hair.if she is correct, which of these diagrams best illustrates anitas alleles pf red hair

What do lava flows made of aa indicate about the type of volcanic eruption that occurred? a. the eruption was viscous. b. the eruption was pyroclastic. c. the eruption was explosive. d. the eruption was quite. !

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome