In humans, process which are involved in variation in traits of humans are mutations, random selection of homologous chromosome in daughter cell which is meiosis, random selection of genes and random fertilization.
Mutation is the change in nucleotide sequences in the normal genetic material which leads to the change in phenotype.
While random segregation and selection of chromosome from the homologous pair to come in a daughter cell is totally random. And these different gametes from one type of germ cells are produced during meiosis.
The random fertilization of these different gametes leads to variation in phenotype of a person.
The process by which the variations of traits develop within a human family are:
The variations of traits lead to differences in organisms' structure, functions, and morphology because they have different inherited information.
Mutations are sudden, stable, and inheritable changes in the genetic material of an organism. It is acquired by changes in nucleotide sequences.
Meiosis can also lead to variations of traits by randomly shuffling genes across chromosomes and then randomly separating half of those chromosomes into each gamete.
Gene flow is known to produce variations of traits in human families as it relates to migration. Migration is the movement of individuals from their native place to the outside in search of food, space, and reproduction.
Therefore, above are some processes by which the variations of traits develop within a human family.
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