Question

Dolly sheep is cloned by Dr. Ian Wilmut was genetically identical to
A. The donor sheep which donated diploid nucleus
B. The sheep which donated the egg cell
C. The surrogate mother
D. The sheep which donated haploid nucleus

Answer 1

The first mammalian clone, Dolly, was developed by Wilmut and Campbell. This is a sheep (sheep) with a mother and without a father. This method mainly includes nuclear transfer and totipotency phenomena. The characteristic of a cell that develops into another cell, tissue or organ and ultimately becomes a single organism is called totipotency.

Complete answer:
Ian Wilmut and colleagues at the Roslin Institute, Scotland, harvested sheep cells. Udder cells are different from skin cells, muscle cells, or nerve cells.
They stored these udder cells in a nutrient-free culture. Check for hungry cell division and turn off active genes. udder cells with nuclei are selected because these nuclei contain parental genetic information.
They now connect the core of the udder to the empty egg cell using electrical stimulation. Then this egg has a mother nucleus. When a normal or deformed egg is transplanted into another woman, she is called a "surrogate mother." This refers to a surrogate mother. The transformed eggs are grown for six days. One of the many surviving embryos is transplanted into the uterus of a surrogate mother and turns into a sheep. Because the first nucleus to turn in this way came from a mother cell, it was born genetically identical to a mother.
It is produced using somatic cell-to-nucleus transfer techniques that involve transferring the nucleus of an adult cell into an unfertilized egg (developing egg) and removing the nucleus.

Since the formation of the dolly nucleus is taken from the mother somatic cell and somatic cells are diploid so the correct option is (A).

Note: They pooled two hundred seventy seven eggs, Wilmut and Campbell said, resulting in a total of thirteen pregnancies, with only one pregnancy producing Dolly's offspring.
Dolly died due to progressive lung disease and severe arthritis.
Dolly spent her entire life at the Roslin Institute in Midlothian. There dolly bred with Welsh goats and produced a total of six sheep. The first sheep named Bonnie. The following year, Dolly gave birth to twins, Sally and Rosie, and then they had triplets, Lucy, Darcy and Cotton.