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A significant difference between the effects of
the genetic information passed on from asexually
reproducing parents to their offspring and sexually
reproducing parents to their offspring is the
(1) degree of modification of the size of
chromosomes
(2) types of DNA subunits
(3) number of chromosomes in the body cells of
the offspring
(4) amount of variation between the parents and
the offspring

Sagot :

flowerhk2002
4, because in asexual reproduction, the offspring is just a copy of the parent, but in sexual reproduction, it's different. I mean, in humans, we aren't exact copies of our moms and dads. We're unique. Unless if you're an identical twin, there's no one out in the world that looks just like you (not similar, but just like you).
samueladesida43

Answer:

4. amount of variation between the parents and

the offspring

Explanation:

In asexual reproduction, mitosis or similar cellular division is employed. Mitosis is the cell division that results in daughter cells that are genetically identical to the parent cell. They are identical in the sense that they contain the same number of chromosomes and exact copies. During asexual reproduction, the genetic material (DNA) replicates and produces two identical copies as the original or parental DNA, these identical copies of DNA is distributed into the resulting daughter cells. Hence, there is no genetic diversity in the offsprings.

In sexually reproducing organisms, gametes or sex cells are produced as a result of meiosis, which is a cell division that results in daughter cells that differ in chromosomal number and sometimes content as the parent cell. During meiosis, specifically the Prophase I of meiosis I, an event called CROSSING-OVER is likely to occur. Crossing-over is the exchange of equal chromosomal segment between two non-sister chromatids of homologous chromosomes. Homologous chromosomes are similar but non-identical chromosomes from each parent. A segment of these chromosomes can become recombined in one another and gets transferred to resulting daughter cells (gametes). Hence, when these gametes are fertilized or fuses, they result in offsprings that are genetically different from the parents.

Hence, this act of crossing-over that occurs only in meiosis of sexually-reproducing organism promotes genetic variation among species.

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