How do you think crossing over affects the number of different types of gametes that are formed?

Answer 1

You get four choices of gene, of which two are randomly selected. Although sometimes these genes are the same, often they are not all identical. this results in different genotypes and therefore phenotypes being experienced.

Answer 2

During crossing over (more formally referred to as genetic recombination) there is an exchange of genetic information between the two homologous chromosomes. Chromosomes are able to give and receive parts of DNA between them. This process ultimately results genetic diversity.

Genetic diversity is what is responsible for the different types of gametes that are formed. It explains the combinations (in physical and genetic features) that are observed in the phenotype.

Answer 3

Crossing over is a process in meiosis when two chromosomes switch a part of their genetic information (genes, alleles, etc.) by crossing over each other. As a result of this process, the two chromosomes now have some different genes/alleles, meaning the combination has changed.

Answer 4

Crossing-over is the process of shuffling genes between chromatids, so at the end of meiosis 2, when the gametes are formed, those chromatids will be different from the original.

Answer 5

The process of crossing over alters the genotype of gametes because when two parents create an offspring it receives genetic information of both parents.

Answer 6

Crossing over occurs when chromosome segments are exchanged between chromatids in meiosis. This results in a new combination of genes and causes genetic variation and diversity.

Answer 7

Crossing-over exchanges the alleles between homologous chromosomes and produce new combinations of alleles

Answer 8

by crossing over

Answer 9

It occurs during meiosis in prophase 1.