Answer: Humans have 22 pairs of autosomal chromosomes with the same gene in both members of a given pair) and one pair of sex chromosomes, which are designated XX in females and XY in males.
Explanation:
The answer is foreign pathogens.
Answer:
<em>The chromosome number will not be constant and the person would die.</em>
Explanation:
During gamete formation, half of the chromosomes arise from one parent and the other half from the other parent. This is possible due to the process of meiosis.
If during gamete formation, the number of chromosome does not get reduced, then after fertilization the gamete will have double the number of chromosomes as compared to the parents. Hence, the chromosome number of the person will not remain constant and he/she would die.
The correct answer is option A- HIV virus.
HIV virus is an example of enveloped virus, that has the ability to infect a host cell by attaching itself to it and fusing with the host cell. Once infected, the virus leaves the host cell and moves to another cells to infect them. The HIV virus contains glycoprotein spikes to attach to the host cell.