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
5 — Pedigrees
Identify how family history can impact the outcome of genes
What does it mean for an individual to be a "carrier" for a trait?
•	a.) The trait is not physically manifested, but the individual possesses a recessive allele for the trait that he/she could pass on to offspring.
•	b.) The individual physically manifests the trait, but since it is recessive, he/she has a low likelihood of passing it on to offspring.
•	c.) The individual is homozygous dominant for the trait and has a 100% chance of passing the trait on to offspring.
•	d.) The individual carries both recessive alleles for the trait and has a high likelihood of passing the trait to offspring.
6 — Chromosome Structure Changes
Identify types of chromosome structure changes
A gene sequence that goes ABCIEFG is likely what kind of mutation?
•	a.) Duplication
•	b.) Deletion
•	c.) Translocation
•	d.) None of these
7 — Chromosome Count Changes
Understand the impact chromosome count has on development
Which of these statements about Turner syndrome is correct?
•	a.) It is associated with heart disorders.
•	b.) It is evident only in males.
•	c.) It is the presence of an extra chromosome.
•	d.) It is evident only in females.
8 — Autosomal Recessive Traits and Disorders
Understand recessive traits
A father has cystic fibrosis and the mother is a carrier for the disorder.
What are the odds that they will have a child with cystic fibrosis?
•	a.) 50%
•	b.) 100%
•	c.) 25%
•	d.) 0%
9 — Autosomal Dominant Traits and Disorders
Understand autosomal dominant disorders
Which of these is an autosomal dominant disorder?
•	a.) Down syndrome
•	b.) Huntington's disease
•	c.) Duchenne muscular dystrophy
•	d.) Cystic fibrosis
10 — X-Linked Traits
Identify the inheritance patterns of red-green colorblindness
A mother has has hemophilia and the father does not.
What do we know about their son?
•	a.) The son is at risk of developing hemophilia.
•	b.) There is a 100% chance the son has hemophilia.
•	c.) The son is a carrier for hemophilia.
•	d.) The son cannot have hemophilia.