In a plant species, flower color has two traits: purple flowers and white flowers. For the flower tree purple self-pollinated, giving birth to 100 plants, including 23 plants with white flowers.

a) Which trait is dominant? Explain.

b) Determine the genotype of purple-flowered plant in P and write a hybrid diagram for the above hybridization.

c) In the F1 plants, how many plants are heterozygous for flower color?

In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits