The correct answer is option D, Temporal isolation
Temporal isolation is the mechanism which prevents the mating of closely related species living in the same ecosystem. Basically the reproductive barriers prevent these species from interbreeding. Temporal isolation is a prezygotic barrier that causes “time isolation” between the breeding period of two closely related species. The difference in time could be “difference in time of day”, “ difference in season of mating”, “difference in months” and in some cases “ difference in years”.
Answer:
a) epigenetic change.
Explanation:
Epigenetic is referred to changes BESIDES the changes in the genetic changes. It means, not related to mutations but to chemical changes such as methylation, acetylation, ubiquitylation, phosphorylation, that can interfere with the genetic expression. Chromatin modification is another way of epigenetic change.
The Punctuated Equilibrium theory proposes that a specie that appears in the fossil record will become stable. To support this theory, a fossil record serves as an evidence which includes transitional fossils. Transitional fossils refers to the remains of an organism that still exhibit traits to both the ancestral and descendant group.
Answer:
Nitrogen
Explanation:
It can change in the Atmosphere or on land:)!
Answer;
a.) the most common kind of cell division
c.)same number of chromosomes in each daughter cell as in the parent cell.
Explanation;
-Mitosis is a type of cell division which takes place ins the body cells or the somatic body cells, where the parent cell divides to give two daughter cells that have the same number of chromosomes as the parent. Thus, if the parent cell will be diploid (2n) then the daughter cells will also be diploid (two sets of each chromosome).
-This type of cell division plays an important part in the development of embryos, and it is important for the growth and development of human bodies as well.
