Explanation:

hey please make me brainlist
It prevents the separation DNA strands from reattaching to
one another during DNA replication is called DNA Helecase. 2 major enzymes used
during DNA replication is DNA helicases, DNA polymerase. DNA Helicase is an
enzyme that unwinds the DNA double helix during DNA replication.
Answer:
a. Genotype of male parent= BbNn
Genotype of female parent: bbnn
b: Progeny ratio= 1: 1: 1: 1
c: 1/4
Explanation:
a. Genotype of male parent= BbNn
Genotype of female parent: bbnn
b. Gamete formed by the male parent: BN: Bn: bN: bn in 1:1:1:1 ratio.
Gametes formed by female parent: All gametes with "bn" alleles.
c. The probability that the offspring will have a genotype of Bbnn=
Bb x bb= 1/2 Bb: 1/2 bb
Nn x nn= 1/2 Nn: 1/2 nn
Therefore, probability that the offspring will have a genotype of Bbnn= 1/2 Bb x 1/2 nn= 1/2.
The answer is B. a total of four haploid cells are formed.
During mitosis, when the nucleus divides, the two chromatids that make up each chromosome separate from each other and move to opposite poles of the cell. This is shown in Figure below. Mitosis actually occurs in four phases. The phases are called prophase, metaphase, anaphase, and telophase