By intruding mutations, which are the ultimate source of biological diversity. I think this is it.
Answer:
each cell deploys its genome and play different role
Explanation:
Answer:
The correct phases would be
Homologous chromosomes are separated: It occurs during anaphase I of the meiosis I. It is the third phase of meiosis I during which homologous chromosomes are separated and pulled in opposite direction with the help of spindle fibers.
Homologous chromosomes are paired: It occurs during prophase I. The pairing of homologous chromosomes is termed as synapsis. The pairing is initiated in the zygotene stage of prophase I of the meiosis I.
Nuclear envelopes form around separated chromosomes: It occurs during the telophase I. It is almost opposite to the prophase I. After this phase, cytokinesis takes place.
The centrosome replicates: The replication of centrosome takes place during the S phase of the cell cycle. They migrate to the opposite ends during the prophase.
A sperm joins an egg cell in the process of fertilization. Because first both of the parents must contribute one gamete, then the sperm and egg unite in the process called fertilization, and finally this process forms a single celled structure called a zygote which contains the full genetic information that will be passed to the offspring. And now the offspring will have half of it's genetics from both of it's parents.
I know all of this because I just learned, studied, and took a test on this topic. Plus I checked Google just to make sure I was correct. Hope I helped you!
- Amber
