In fruit flies, the genes for body color and wing shape are linked. When a dihybrid black straight-winged fly is test-crossed with a double-recessive brown curly-winged fly, the frequency at which black curly-winged and brown straight-winged flies are seen in the progeny is called the _______ frequency.

A: mutation
B: recombinant
C: allele
D: parental
E: meiotic


Ans: B: recombinant

Biology & Microbiology

You might also like to view...

The enzyme ________ breaks down the extracellular matrix to facilitate angiogenesis.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

In the region of budding, the plasma membrane acquires

A. carbohydrates. B. spike proteins. C. matrix proteins. D. enzymes. E. spike proteins AND matrix proteins.

Biology & Microbiology

A graded, subthreshold change in the postsynaptic membrane potential that moves it toward threshold

is called a(n)

a. IPSP. b. hyperpolarization. c. EPSP. d. depolarization. e. repolarization.

Biology & Microbiology

The following events took place in a rice plant. Arrange them in order of occurrence

1 . Seed formation takes place in the ovary. 2 . Self-pollination. 3 . Double fertilization takes place in the female gametophyte. 4 . Pollen is produced in the anther. 5 . The mature rice grains are harvested. a. 5, 4, 3, 2, 1 b. 4, 2, 1, 3, 5 c. 4, 2, 3, 1, 5 d. 4, 3, 2, 1, 5 e. 4, 2, 3, 5, 1

Biology & Microbiology