Flatworms were one of the first to develop a , which allowed them to detect light, food, and mates.

Jellyfish sometimes squeeze in the sides of their bodies. this pushes a stream of water from the back end of their bodies. according to newton’s third law of motion, how will this behavior affect of the jellyfish ?

What percentage of organisms is played the dominant trait (tall) in the f2 generation? a.25% b.100% c.75%

Researchers studying a small milkweed population note that some plants produce a toxin and other plants do not. they identify the gene responsible for toxin production. the dominant allele (t) codes for an enzyme that makes the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin. heterozygotes produce an intermediate amount of toxin. the genotypes of all individuals in the population are determined (see chart) and used to determine the actual allele frequencies in the population.is this population in hardy-weinberg equilibrium? a) yes.b) no; there are more homozygotes than expected.c) no; there are more heterozygotes than expected.d) more information is needed to answer this question.