Answer:
The answer is 4
Explanation:
The answer is 4 because we are talking about pairs of homologous chromosomes and there two copies are held together and they are located in the centromere.
Synapsis is two homologous chromosomes pairing. During the event of <em>meiosis </em>homologous chromosomes are being pared but then also separated because of reducing the genetic content of the resulting haploid cells.
Sickle cell anemia is caused by an abnormal hemoglobin in red blood cells. hemoglobin is the red pigment found in red blood cells for carrying oxygen.The abnormality arises from a genetic mutation in the DNA gene that codes for the beta chain of the protein called globin of which hemoglobin is made of.In the beta chain, the sixth amino acid called glutamine is replaced by another one called valine.<span>This one change in the amino acids cause the hemoglobin protein to behave abnormally, causing red blood cells to lose their normal spherical shape and become bent like a sickle, hence the name "sickle cell" anemia</span>
Amino acids are the monomers, or the building blocks that make up all proteins.
New, inheritable characteristics can result from the recombination of genes during meiosis and <span>mutations in the genes found in sex cells. The correct option among all the options that are given in the question is the first option. I hope that this is the answer that has actually come to your desired help.</span>
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