contestada

7)
Sexual reproduction is the most common form of reproduction in the animal kingdom and is the only reproduction type in humans.
With over seven billion humans on Earth, there is an enormous variation in genetics within the human population. Which
statements describe how cell division and sexual reproduction contribute to this huge genetic variation? Select ALL that apply.
A)
B)
Random fertilization of haploid eggs by many potential haploid sperm
increases genetic variation
Increased frequency of mitotic division ensures that animals have cells to
replace those that are lost.
The ability of homologous chromosomes to swap and exchange gene
regions in meiosis contributes to genetic variation.
Random assortment of homologous chromosomes in metaphase I increases
the variation of chromosomes that segregate into gamete cells in meiosis.
Increased chromosome number at the end of meiosis ensures that resulting
offspring have additional chromosomes containing increased genetic
variation
D)
E)

Respuesta :

samueladesida43

The statements that describe how cell division and sexual reproduction contribute to huge genetic variation is as follows:

  1. The ability of homologous chromosomes to swap and exchange gene regions in meiosis contributes to genetic variation.
  2. Random assortment of homologous chromosomes in metaphase I increases the variation of chromosomes that segregate into gamete cells in meiosis
  3. Random fertilization of haploid eggs by many potential haploid sperm increases genetic variation

SEXUAL REPRODUCTION:

  • Sexual reproduction is the kind of reproduction that involves two organisms (male and female).

  • Sexually reproducing organisms produce gametes or sex cells by a process called MEIOSIS.

  • Meiosis reduces the chromosome number by half i.e. from diploid (2n) to haploid (n).

  • A process called crossing over, which is the process by which non-sister chromatids of homologous chromosomes exchange their genetic material. The process of crossing over aids in genetic variation.

The statements that describe how cell division and sexual reproduction contribute to huge genetic variation is as follows:

  1. The ability of homologous chromosomes to swap and exchange gene regions in meiosis contributes to genetic variation.
  2. Random assortment of homologous chromosomes in metaphase I increases the variation of chromosomes that segregate into gamete cells in meiosis
  3. Random fertilization of haploid eggs by many potential haploid sperm increases genetic variation

Learn more at: https://brainly.com/question/12327654?referrer=searchResults

malejita07181988

Answer:

1. Random fertilization of haploid eggs by many potential haploid sperm increases genetic variation.

2. Random assortment of homologous chromosomes in metaphase I increases the variation of chromosomes that segregate into gamete cells in meiosis.

3. The ability of homologous chromosomes to swap and exchange gene regions in meiosis contributes to genetic variation.

Explanation:

Meiosis has crossing over in prophase I which increases genetic variation, independent assortment in metaphase I, and resulting haploid cells by the end. The resulting haploid cells can fertilize other haploid cells, with a random nature. However, mitosis does not contribute to genetic variation. Also, meiosis results in haploid cells, not diploid cells or cells with an increase in genetic chromosome quantity.

Otras preguntas