According to the Darwin, change in species occurs due to the strugle for existance by organisms(natural selection) and according to the Lamark, change in species occurs due to the inheritance of acquired characters from one to another generation.
B. speeds up action potentials
The answer should be C, unlike meiosis, mitosis occurs only in somatic cells (body cells such as skin cells, muscles cells etc)
Mitosis is a process of cell division that produces 2 daughter cells that are genetically identical to both the other daughter cell and the parent cell. This process includes am exact duplication of genetic information, which means, the daughter cells have the exact number of chromosomes to the parent cell. We call these daughter cells as diploid. On the other hand, meiosis is the process of cell division that produces 4 daughter cells that are genetically different from the parent cells. They only have half of the original number of chromosome. Meiosis includes 2 cell divisions, and the daughter cells are called haploid.
Therefore, since mitosis produces 2 identical daughter cells, they're found in somatic cells, as they're used for growth or development. You wouldn't suddenly grow some muscles cells in your skin cells, therefore mitosis cells must be identical. However, meiosis cells since they only have half of the original chromosome number, they're used in producing gametes, sperm and eggs for human. So that, when 2 of these gamete cells fertilizes, the zygote can restore the actual number of chromosome, which is 46 for human, each egg and sperm carry 23.
So, your answer is C.
<h2><u>Answer:</u></h2>
The correct option is B (The longer-spined sea urchins existed before the shorter-spined sea urchins.)
<h3><u>Explanation:</u></h3>
The more drawn out spined ocean urchins existed before the shorter-spined ocean urchins.
Since the shorter spined urchins are higher up, that demonstrates that they developed from the more drawn out spined urchins, implying that having the shorter spines was useful to them as an animal types, so the shorter spines came AFTER the more extended spines.
The answer is false. plants have to adapt to there environment because if its a rain forest plant moved to the desert it has to adapt to a low water supplied location
