Which substance is considered a teratogen?
a. DNA
b. Estrogen
c. Androgen
d. Lactic acid
e. Nicotine

Which of the following are energy solutions that release pollution into the air>

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

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)