Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
Related questions
Question
Enumerate at least three mechanisms of
Expert Solution
Step 1 introduction
Genetic variation : It is presence of differences in sequences of genes between individual organisms of a species . It enables natural selection .
It results in different forms or alleles of genes . For example Eye color , people with blue eye color have one allele of the gene , whereas people with brown eyes have a different allele of the gene.
There are three sources of variation i.e.
Mutation
Recombination between homologous chromosomes during meiosis
Immigration of genes or random mating or random fertilization
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