Answer:
The correct option is D
Explanation:
Beta-thalassemia major is a hereditary disorder that usually causes severe anaemia. This mutation/disorder eventually leads to death if untreated especially during in the first two years of infancy. The treatment usually involves the transfusion of blood to clear the phenotypic blockage caused by the mutation. However, it requires both alleles to have the thalessemia mutation for a patient to be said to have beta-thalassemia major. Hence, <u>it is </u><u>not true</u><u> that it involves just the x allele and thus affects males more often than females</u>.
Answer:
<h2>Agree
</h2>
Explanation:
1. Through mitosis, Parental cell divide into two daughter cells with same number of chromosomes.
While meiosis produce 4 daughter cell from a single cell with half the number of chromosomes as compared to parental cell.
2.Meiosis have two cycles , i) meiosis I and ii) meiosis II.
3. In meiosis I, chromosomes first go replication and become double, then cell inter into meiosis I then into meiosis II and finally produce four haploid daughter cells. It is the first step (meiosis I) that generates genetic diversity. During prophase I of meiosis I (meiosis) homologous chromosomes pair and form synapses, a special step of meiosis, which is the main reason of causing diversity.
4. There is crossing over which produce genetic diversity between gametes.
