Multicellular organisms are made up of different types of differentiated cells. Given that all cells in an organism
have the same DNA-and thus the same genes-explain how it is that different genes can be expressed only in
certain types of cells.

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)

In which squares should the phrase "green pods" appear a) a and d b) b and e c)a, c, and d d)a, b,c, d and e

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.