Meiosis and variation:
Variation between individuals that sexually reproduce is caused by factors other than mutation, such as the process of meiosis.
It is during meiosis that a process called crossing over occurs in which parts of maternal and paternal chromosomes detach and reattach to a different section of the tetrad.
Variation also occurs in meiosis because of the independent assortment of chromosomes into the gametes.
Variation results from the fusion of a combination gametes during fertilisation as well as the selection of a particular mate.
Differences in the alleles for a specific trait within individuals (its genotype) contributes to variation in the phenotype between individuals.
Variation between individuals that sexually reproduce is caused by factors other than mutation, such as the process of meiosis.
It is during meiosis that a process called crossing over occurs in which parts of maternal and paternal chromosomes detach and reattach to a different section of the tetrad.
Variation also occurs in meiosis because of the independent assortment of chromosomes into the gametes.
Variation results from the fusion of a combination gametes during fertilisation as well as the selection of a particular mate.
Differences in the alleles for a specific trait within individuals (its genotype) contributes to variation in the phenotype between individuals.