In fruit flies, the allele for white eyes is recessive to the allele for...
a. one parent was heterozygous for eye color and the other was homozygous with red eyes. incorrect
b. both parents were homozygous with red eyes.
c. one parent had white eyes and the other was heterozygous for eye color.
d. both parents were heterozygous for eye color.
(i know it isnt a)
White eyes (r) are recessive to Red (R). a) Rr x RR produces 50% RR and 50% Rr, both express with red eyes so there can be no white eyed offspring. b) RR x RR produces all RR, red eyes so there can be no white eyed offspring. c) rr x Rr produces Rr, rr, Rr, rr. 50% white, 50% red which is close to the generation given. d) Rr x Rr produces RR, Rr, Rr, rr: 75% Red, 25% white. not as close to the data as c.
2 is B because the absence of functional proteins and some ribosomes due to the mRNA strand is not as detrimental as the loss of the entire cell.
3 is B. (The insertion of 3 base pairs into a genetic sequence is the length of a single codon, meaning that only one amino acid in the entire polypeptide was added)
i would say that hybridization occurs frequently in nature, because there are many types of hybrids that have occurred naturally, such as the mule (male donkey + female horse)
it is either c or d and i know for sure it is not a or b