It is colder at the top of a mountain because there is less air pressure. The same amount of heat is now in a larger area so it is more spread out.
The answer is C
Plasmids are conferred through horizontal gene transfer in bacteria. The ‘male’ bacteria develops a structure called pili that then attaches to the ‘female’ bacteria. It then transfers it’s replicated plasmid to the ‘female’ bacteria in a process called conjugation. This bacteria will hence have desirable traits that are coded for by the transferred genetic material ,such as antibiotic resistance, after a process called recombination.
The hatchery bred salmons do have different traits as compared to the wild salmons because of the environmental effects it does have on their maturity.
Option B.
<h3><u>Explanation:</u></h3>
The wild varieties of salmons do live in natural streams and rivers and do have to collect their own food themselves. They face the struggle for their existence as well as they have to compete with each other for getting food. So their adaptation is very high and specialized.
Whereas the hatchery bred salmons get their food from what is supplied to them. They get perfect conditions for living artificially. They also doesn't face wild traits of diseases which do often attack the wild varieties, so lacks the immunities against them. Thus these differences lead to the different traits between them. Thus they cannot survive together and it will lead to a divergent evolution, or the survival of the fittest and natural selection will eliminate the hatchery bred varieties because if their incapabilities.
It depends on whether or not the parents are heterozygous for the trait. if they both are, then the child will have a 75% chance of having a widows peak.
