What type of reproduction produces the greatest variation in offspring?
What type of reproduction produces the greatest variation in offspring?
Sexual reproduction
Sexual reproduction results in offspring with greater genetic variation. Asexual reproduction is essentially passing on the exact same genes from parents to offspring–the offspring are exact duplicates or clones of the parent, such as in single celled organisms like bacteria.
What is the greatest source of genetic variability?
Mutation is the ultimate source of genetic variation, but mechanisms such as sexual reproduction and genetic drift contribute to it as well.
Which processes result in the greatest amount of genetic variation in a population?
Cards
| Term GENE | Definition a heritable factor that controls a specific characteristic |
|---|---|
| Term Which processes result in the greatest amount of genetic variation in a population? A. Natural selection and meiosis B. Meiosis and mutation C. Mutation and mitosis D. Mitosis and natural selection | Definition B. Meiosis and mutation |
Which type of reproduction promotes variability in the offspring?
Sexual reproduction provides genetic diversity because the sperm and egg that are produced contain different combinations of genes than the parent organisms. Asexual reproduction, on the other hand, does not need sperm and eggs since one organism splits into two organisms that have the same combination of genes.
How does sexual reproduction lead to no genetic variation?
It therefore leads to offspring that show no genetic variation. Sexual reproduction requires two parents, a male and a female, each of which produce gametes. Fertilisation is the fusion of the nucleus of a male gamete with the nucleus of a female gamete. In humans, each gamete has half the total of 46 chromosomes that the body requires.
How many chromosomes does a mature male gamete have?
A mature male or female reproductive cell (sperm or ovum) containing half of the total number of chromosomes in a cell (i.e., humans have 46 chromosomes per cell; gametes would have 23). . There are several key differences between meiosis and mitosis that are summarized in the following table:
How are gametes produced in meiotic cell division?
All the cell division that takes place in your body for everyday growth and repair is mitotic cell division; each cell has the same genitic material as the parent cell. But when gametes are produced they are produced by meiotic cell division (8.15). The cells produced by meiotic cell division have half as many chromosomes (they are haploid cells).
What happens when two gametes combine to form a diploid?
When the two gametes combine, they merge the two sets of chromosome to have 46, which are referred to as diploid. This produces a new cell called a zygote, which will mature into an embryo. The number of cells increases by mitosis, and as the embryo develops, the cells begin to differentiate (or specialise).