In humans, the allele for a widow’s peak is dominant to the allele for a straight hairline. in a family with three children, two of the children have a straight hairline and one child has a widow’s peak. which of the following is possible?
a. both parents are homozygous for a straight hairline.
b. both parents are homozygous for a widow’s peak.
c. one parent is homozygous for a straight hairline, and the other is heterozygous.
d. one parent is homozygous for a widow’s peak, and the other is homozygous for a straight hairline.

Which best describes how parents affect the genotype of a child? a. the parents decide what to feed their child b. the parents choose whether to educate their child c. the parents allow their child to stay up late d. the parents pass along genes to the child

Which image shows labeled organelles that are present only in plant cells?

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?