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Quiz: Investigate Alien Genetics

1. For most genes, how many copies does each person carry?
Correct.
Incorrect.
2. Mark the following statements (A-F) true or false.
A. The phenotype is the expression of the genotype, or a person's actual observable physical characteristics.
B. The genotype is the version of a DNA sequence that a person has.
C. A "BB" genotype represents a homozygous trait.
D. A "Bb" genotype represents a heterozygous trait.
E. A "bb" genotype represents a heterozygous trait.
F. In a heterozygous genotype, the recessive allele takes over in the phenotype.
3. The alien hair color (H) is a Mendelian trait, with green hair being dominant and purple hair being recessive. What are the chances of an alien baby having purple hair if its mother has an hh genotype and its father has an Hh genotype? Hint: If you aren't sure, draw a Punnett square to help you find the answer.
Correct.
Incorrect.
4. Let’s assume that having freckles is a dominant trait (F). There are two siblings, one with the alleles Ff and one with the alleles ff. Which statement about these two siblings is true?
Correct.
Incorrect.
5. The diagram below shows a Punnett square. What is the genotype of the missing parent?
Image Credit: Svenja Lohner, Science Buddies / Science Buddies
Correct.
Incorrect.

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