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Punnet Squares

Phenotype & Genotype Assessment

Law of Segregation states that during the formation of gametes (eggs or sperm) the two alleles responsible for a trait separate from each other. Then they "recombined" at fertilization producing the genotype for the offspring.
Genotype • A genotype is an organism's genetic makeup or allele combination. • A genotype cannot be seen
Homozygous • Having two identical alleles for a particular gene • Two dominant alleles OR two recessive alleles.
Law of Dominance states that if one parent has 2-copies of allele A, and the other parent 2-copies of allele a, The offspring will inherit an Aa genotype and show off the dominant phenotype.
Phenotype A phenotype is an organism's physical appearance or visible traits
Heterozygous • Having two different alleles for a particular trait. • One dominant and one recessive trait
What is a Punnett Square? • A Punnett square is a chart that shows all of the possible combinations of alleles that can result from a genetic cross.
Law of Independent Assortment states that alleles for different traits are distributed to sex cells & offsprings independently than one another.
Created by: evie.mayer