Sophia - Human Biology - Unit 6 Challenge

1 — Heredity Identify the components of heredity What is it called when a gene varies slightly from other genes of the same type? • a.) Genotype • b.) Phenotype • c.) Heterozygous • d.) Allele 2 — Punnett Squares Determine explanations or possibilities in given hereditary examples Brown eyes are a dominant trait. Mike and Trisha both have brown eyes, but their first child has blue eyes. What is the most likely explanation? • a.) One of the two has a blue eye allele that is dominant in the child. • b.) It's not possible--Mike can't be the real father. • c.) Both parents have a recessive blue eye allele that got passed on to their child. • d.) Another gene caused the alleles for brown eyes to deactivate. 3 — Codominance Understand how codominance works With blood type, the __________ alleles are considered __________ and can be expressed together. • a.) B & O, codominate • b.) A & B, codominant • c.) A & B, recessive • d.) A & O, recessive 4 — Polygenic Traits and Pleiotropy Understand how genes interact with one another and their environment What is it called when two separate genes contribute to one phenotype? • a.) Multifactorial trait • b.) Polygenic trait • c.) Penetrance • d.) Pleiotropy