Dolly was a female domestic sheep, and the first mammal to be cloned from an adult somatic cell, using the process of
a) dna transfer
b) cell transfer
c) oocyte transfer
d) nuclear transfer

The correct answer for the blank is-

D) nuclear transfer.

Dolly was a female domestic sheep, and the first mammal that was cloned using an adult somatic cell ( particularly a mammary gland cell from a Finn Dorsett sheep). She was produced using a technique, which is termed as somatic cell nuclear transfer.

In this technique, the nucleus from an adult somatic cell was transferred to an unfertilized oocyte ( which was first enucleated that is nucleus was removed). After this, unfertlized egg was activated using electrical stimuli, which initiated cell division and produced Dolly.

Thus, option D) nuclear transfer is the right answer.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.