Well first, your immune system has two main halves, innate and adaptive... the innate is the line of defense to fight off disease and bacteria, which is made up of anatomical barriers
The answer is A) Haploid cells
We suppose the black fur is A and the white fur is a. The capital letter represents the dominant. Then the heterozygous black male is Aa and homozygous white female is aa. Then the offspring has two types, Aa and aa. The possibility of these two is equal and both are 50%.
I have my notes here about cell division which could hep you solve the problem on your own.
The first period of the first phase (interphase) of the cell cycle is G1, followed by S and G2, and finally by the mitotic phase.
During G1, the ploidy (the quantity of DNA molecules in the cell) can be represented by the formula 2n (n is the number of DNA molecules in a gamete cell of a given species). During S, DNA duplicates and the quantity of genetic material increases from 2n to 4n. During G2, the quantity remains the same: 4n. After the mitotic phase, the quantity of genetic material decreases to 2n in each daughter cell.
The answer is fertilization.
Among the given choices, fertilization is the closest answer. Generally, fertilization occurs when the nucleus both reproductive cells called gametes from a male and a female combines. And the result of the fertilization is the combination of the chromosomes from the male and the female.
