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Punnett Squares

vocab

TermDefinition
Punnett Squares A diagram used to predict possible genotypes from certain parents
homozygous having two identical alleles of a particular gene or genes
heterozygous Having two different alleles of a particular gene. Represented by a capital letter and a lowercase letter (Ex. Bb)
dominant A genotype where an organism inherits two dominant alleles. Represented by capital letters (Ex. BB)
recessive A genotype where an organism inherits two recessive alleles. Represented by lowercase letters (Ex. bb)
genotype The complete set of genes of an organism
phenotype The physical traits of an organism (Ex. red hair)
probability The percentage or ratio of genetic outcomes in a punnett square (Percentage - 25%, 50%, 75%, 100% : Ratio - 0:4, 1:3, 2:2, 3:1, 4:0)
heredity The passing of traits from parent to offspring
Gregor Mendel The Father of Genetics
chromosomes Are like tiny packages inside your cells that hold the instructions for your body. They are made of DNA, which contain genes that determine your traits (Ex. eye color, height)
gene A small piece of DNA, that gives instructions for what traits you’ll have. It’s passed down from parents to kids
codominance An inheritance pattern where two alleles are expressed equally, and neither allele is dominant or recessive
alleles Are versions of a gene
incomplete dominance Happens when traits mix or blend together instead of one trait showing up more than the other
polygenic traits A characteristic that is determined by more than one gene (Ex. AaBBcC)
epistaxis One gene can hide or influence the effect of another gene
Created by: BKsoccer1013
 

 



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