I dont know any of this please help me this iis super hard
Answer:
Because natural selection selects for it. Thus it persists.
Explanation:
You have to understand heterozygote advantage. Basically, it's where heterozygotes have an advantage over homozygotes. In the case of sickle cell disease, heterozygotes have an advantage, and natural selection favors whatever is advantageous. Thus, because heterozygotes each have one recessive sickle-cell allele, as natural selection favors the heterozygotes, the recessive sickle-cell allele persists and remains in the gene pool.
1. DNA strands separate
2. RNA polymerase attached to the gene
3.ribonucletides are assembled
4. mRNA searches from the gene
5. mRNA leaves the nucleus
6. mRNA attaches to ribosome
Answer:
The contractile ring shrinks through the center of the cell, evenly dividing the cytoplasm between the two halves. This indicates that cytokinesis is completed and the cell has been replicated.
Answer:
its most likely A, in sanitary landfills