I need help please-
How many chromosomes should a cell used in sexual reproduction have?
- half as many as the species normally has in its diploid cells, so that the other chromosomes can come from the other parent
- exactly one chromosome, regardless of species, so that the offspring can develop its own genetic code and increase diversity
- exactly as many as the species normally has in its diploid cells, so that the offspring’s genetic code is the same as the parents'
- twice as many as the species normally has in its diploid cells, so the offspring will have all the traits from both parents
For anyone seeing this in the future, the answer is A :)
Nvm- I think it's D ; - ;
To determine how many chromosomes a cell used in sexual reproduction should have, we need to understand the process of sexual reproduction. In most species, including humans, sexual reproduction involves the fusion of two sex cells, or gametes, to create an offspring.
The sex cells, also known as egg and sperm cells, are produced through a special type of cell division called meiosis. Meiosis involves two rounds of cell division that results in the production of four genetically unique haploid cells. Haploid cells contain only half the number of chromosomes found in diploid cells, which are the cells found in most of the body tissues.
Given this information, we can evaluate the options provided:
- Half as many as the species normally has in its diploid cells, so that the other chromosomes can come from the other parent: This option is correct. In sexual reproduction, each parent contributes one set of chromosomes, which are combined in the offspring. Therefore, the cell used in sexual reproduction should have half the number of chromosomes compared to the species' normal diploid cells.
- Exactly one chromosome, regardless of species, so that the offspring can develop its own genetic code and increase diversity: This option is incorrect. Having only one chromosome would not provide enough genetic material for proper offspring development and would not ensure genetic diversity.
- Exactly as many as the species normally has in its diploid cells, so that the offspring’s genetic code is the same as the parents' : This option is incorrect. If the cell used in sexual reproduction had the same number of chromosomes as the species' diploid cells, there would not be any contribution from the other parent, which is necessary for genetic diversity.
- Twice as many as the species normally has in its diploid cells, so the offspring will have all the traits from both parents: This option is incorrect. If the cell used in sexual reproduction had twice the number of chromosomes as the species' diploid cells, it would result in an unbalanced genetic condition in the offspring.
So, the correct answer is: Half as many as the species normally has in its diploid cells, so that the other chromosomes can come from the other parent.