Molecular Biology and Genetics MCQ Questions & Answers | Biotechnology

In a genetic cross between the genotypes WWXX and wwxx, the following phenotypic distributions were observed among the F₂ progeny: WX, 562; wx, 158; Wx, 38; and wX, 42. Likewise, a cross between XXYY and xxyy yielded the following results: XY, 675; xy, 175; Xy, 72; and xY, 78. Similarly, a cross between WWYY and wwyy yielded: WY, 292; wy, 88; Wy, 12; and wY, 8. In all the genotypes, capital letters denote the dominant allele. Assume that the F₁ progeny were self-fertilized in all three crosses. Also, double cross-over does not occur in this species. Which of the following is correct?

The major groove of DNA is lined by

An example for template independent DNA polymerase is

Synteny refers to

Which of the following processes can increase genetic diversity of bacteria in nature?
P. Conjugation
Q. Transformation
R. Transduction
S. Transfection

"Determine the correctness or otherwise of the following Assertion (A) and the Reason (R).
Assertion: N-methyl-N'-nitro-N-nitrosoguanidine (NTG) is an effective chemical mutagen.
Reason: Mutations induced by NTG mainly are the GC → AT transitions."

If a segment of a sense strand of DNA is 5'-ATGGACCAGA-3', then the resulting RNA sequence after transcription is

Which of the following statements with respect to the orientation of the nitrogenous bases to the pentose sugars, and the puckering of the sugar, is correct?

Of the two diploid species, species I has 36 chromosomes and species II has 28 chromosomes. How many chromosomes would be found in an allotriploid individual?

Ames test is used to determine