6. In sheep white wool is due to a dominant gene (W), black to its recessive allele (w). A farmer has a flock of 112 sheep and 93 of them are white. calculate the following showing all math work to 3 decimal places. A. The frequency of the recessive allele B. The frequency of the dominant allele C. The frequency of heterozygous individuals =

In the family tree below, people with the recessive trait of attached earlobes are shaded gray.

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.