BIOL 1202 : Test 1
Document Summary
Variation between populations: population of the same organism can show variations. The variation between populations can be discrete or continual: frequently continual variation in a population will exist as a cline- a graded variation in a trait that parallels a gradient in the environment (see fig 23. 5) If you add up all the alleles for a particular trait, the allele frequency for an allele can be determined. If only one allele exists for a trait, then that trait is "fixed" in the population. The allele frequency is 1. 0 (100%: most traits have multiple alleles and each allele has a frequency of occurrence. In the absence of other factors, the segregation and recombination of alleles during meiosis and fertilization will not alter the overall genetic makeup of a population. the gene frequencies will remain constant unless nature forces a change. The peas are diploid for the pea shape gene and are either round or wrinkled.
