Which trait is considered to be a multifactorial trait? why? a. sickle cell anemia because according to the scitable article, some haplotypes can increase the severity of the symptoms suggesting a strong gene and gene interaction. b. huntington's disease because of anticipation which suggests that environment influences phenotype development. c. diabetes type 2 because cumulative effects of a gene network leads to the disease and the influence by the environment?

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

Aheterozygous normal male marries a woman with a sickle cell anemia. give the genotypes and possible phenotypes of the offspring

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%