In an embryo, the formation of many types of
tissues and organs occurs as a result of the
process of
(1) fertilization
(2) genetic sorting
(3) differentiation
(4) gene recombination

What is the chance of two parents with blood types ab and o producing an offspring with blood type o a.0% b.25% c.75% d.50%

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

The term equestrian relates to which animal? bulls cows horses pigs