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Punnet Squares
Phenotype & Genotype Assessment
| Question | Answer |
|---|---|
| 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. |