Which of the following explains how the processes involved in meiosis increase variation in a species? a. the gametes of asexually-reproducing organisms automatically reshuffle during meiosis, creating genetic variation in their offspring. b. the gametes of asexually-reproducing organisms undergoing meiosis always contain mutations, creating genetic variation in their offspring. c. the gametes of sexually-reproducing organisms always mutate during meiosis, creating genetic variation in their offspring. d. the gametes of sexually-reproducing organisms reshuffle through crossing over and independent assortment during meiosis, creating genetic variation in their offspring.

Akrabby blind whale has married pearl who has normal vision. oneof their two sons is also colorblind. what arr the genotypes of the parents?

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a. one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b. one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c. one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.