Vaccines do not always prevent the spread of a virus. Vaccines help your body fight off viruses and protect your organs, among other things. Vaccines help protect you and others by killing the virus faster but do not necessarily prevent it from spreading. Staying at home and thoroughly cleaning your home is the only way to prevent a virus from spreading.
The Correct answer is option A
Reason -
The concept of evolution revolve around the fact that the change in a species occur over a period of time , usually through several generations and through the process of natural selection. It also states that the species are dependent on each other and do change gradually over time.
The above scenarios are not not fulfilled in any of the options other than A. Though in option B, there is a change in characteristics of mice not being trapped in mouse traps but it is something which is taught and not attained through natural selection.
It would be (A) it is a deficiency of minerals in mammals
Diploid refers to a cell that has two copies of each chromosome. One way that a diploid organism could have an offspring that are 3n (triploid) or 4n is when the chromosomes don't separate during meiosis.
Triploid refers to some cell that have 3 copies of each chromosomes for a total of 69 chromosomes.
