The Earth's tilt on it's axis
Answer:<span>Archaea; Bacteria
</span>
A recent tree of life refers to two
domains of life (bacteria, archaea) and places the Eukarya inside the Archaea domain, implying that Archaea and Eukarya had a common ancestor. This hypothesis says that eukaryotes arose directly from an Archaea, and acquired the cell structure of an Eukarya organism.
Primarily, the common iliac arteries supply blood to the bones, organs, muscles, and other structures in the abdomen and pelvis. These arteries play an important role in lower limb circulation.
Answer:
2 cells meet and the number of chromosomes becomes equivalent to the somatic cell.
Explanation:
In meiosis crossing over occurs and the number of chromosomes divided or remain half as compared to a somatic cell which is called Haploid (n). When two haploid cell meets than diploid (2n) cell formed which further transforms into a zygote. So, the purpose of meiosis is the cross over which creates genetic variation among individuals and reduced the number of chromosomes into the half. Because if the number of chromosomes remains the same as (2n) and (2n) meets and becomes 4n. Which is the wrong pattern so nature keeps this balance in a unique manner that (n) and (n) meets and form (2n).