Sophia - Human Biology - Unit 6 Challenge

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