What is artificial selection? A. When 60 percent of a species dies at one time
B. When humans breed an animal for a certain trait
C. When a new allele is formed by mutation
D. When extreme traits are selected by nature
SUBMIT

Milk production during breastfeeding is increased by the suckling of a newborn from his mother's nipple. this type of feedback mechanism best describes a positive or negative

1. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 50%25%0%100% 2. in a certain species of plant, the color purple (p) is dominant to the color white (p). according the punnett square, what is the probability of and offspring being white? 0%100%50%25%(picture 1 is for question 1, and picture 2 is for question 2)

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million