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Biology Ch. 7

QuestionAnswer
Trait A distinguishing characteristic passed down from parent to offspring
Monohybrid Cross A genetic cross that only deals with one set of characteristics
Dihybrid Cross A genetic cross dealing with two sets of characteristics
Cross-pollination The fertilization of a flower with the pollen of another flower
Self-pollination Pollination of a flower by pollen from the same flower
Dominant The characteristic expressed even in the presence of a recessive gene
Recessive Characteristic that is only expressed in the homologous recessive condition
Alleles One of a pair of genes that have the same position on homologous chromosomes.
Homozygous/Purebred Both alleles in one organism are the same (RR)(rr)
Heterozygous/Hybrid Two different alleles at the same position on homologous chromosomes (Rr)
Incomplete Dominance Occurs in F1 chromosome Produces phenotype combination of the phenotype of the two parents
Phenotype based on Genotype The physical expression of an organisms genes
Genotype The genetic makeup of an individual organism
Pedigree A chart of the genetic history of a family over several generations
Sex-Linked Traits Traits located on the sex chromosome
Gregor Mendel Father of Genetics Discovered self vs cross pollination Discovered traits come from parents Experimented with peas to test pure vs hybrid
Law of Dominance parents with pure traits will only have 1 offspring with their form of the trait
Law ofSegregation during gamete formation, the two alleles responsible for a trait separate from each other
Law of Independent Assortment alleles for different traits are distributed to sex cells independently of one another
Created by: emma-sanders