Awoman with severe discoloration of her tooth enamel has four children with a man who has normal tooth enamel. two of the children, a boy (b) and a girl (g), have discolored enamel. each has a mate with normal tooth enamel and produces several children. g has six children, four boys and two girls. two of her boys and one of her girls have discolored enamel. b has seven children, four girls and three boys. all four of his daughters have discolored enamel, but all his boys have normal enamel. explain the inheritance of this condition

Two true-breeding pea plants were crossed. one parent is round, terminal, violet, constricted, while the other expresses the respective contrasting phenotypes of wrinkled, axial, white, full. the four pairs of contrasting traits are controlled by four genes, each located on a separate chromosome. in the f1 only round, axial, violet, and full were expressed. in the f2, all possible combinations of these traits were expressed in ratios consistent with mendelian inheritance. (a) what conclusion about the inheritance of the traits can be drawn based on the f1 results? (b) in the f2 results, which phenotype appeared most frequently? what mathematical expression predicts the probability of occurrence of this phenotype? (c) which f2 phenotype is expected to occur least frequently? what mathematical expression predicts this probability? (d) in the f2 generation, how often is either of the p1 phenotypes likely to occur? express your answer as a fraction (example: 3/16).

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

The chromosomal structure that limits the number of cell divisions of a cell is the the chromosomal structure that limits the number of cell divisions of a cell is the kinetochore telomere histones centromere