Question

1 processes during meiosis are responsible for the genetic variation between siblings. what claim could be made about the process that resulted in the genetic variation between lucy and maria ayimer? (1) the dna replication process produced the same genetic information. (2) the cytoplasm of the cell is divided making different cells for each twin. (3) the crossing over of sections of chromosomes during sexual reproduction. (4) a single parent cell duplicated genetic information and then the cell divided. 2 which claim could be made about how meiosis contributes to genetic diversity in offspring? (1) the process of meiosis ensures that every offspring receives an identical set of genes from their parents. (2) during meiosis parental alleles are combined in new ways, resulting in unique genes for each offspring. (3) cloning the genes from one parent during meiosis and passing them directly to offspring results in an increase of genetic diversity. (4) preventing variation from occurring during meiosis results in keeping genetic information consistent throughout many generations.

Explanation:

1. In meiosis, crossing - over of sections of chromosomes during sexual reproduction leads to genetic variation between siblings. DNA replication produces identical copies but is not the main source of variation here. Cytoplasm division doesn't directly cause genetic variation at the chromosomal level. A single parent cell duplicating and dividing mitotically would produce genetically identical cells, not account for variation between siblings.
2. Meiosis contributes to genetic diversity as parental alleles are combined in new ways during processes like crossing - over and independent assortment, resulting in unique genes for each offspring. It doesn't ensure identical sets of genes for offspring, there is no gene - cloning in the context of normal meiosis for increasing diversity, and preventing variation would not lead to genetic diversity.

Answer:

1. (3)
2. (2)