Amoeba Sisters Video Recap: Alleles and Genes

1. Visualizing the Vocabulary: For the following illustration,

determine where you could label the following terms:

allele, gene locus, and chromosome. Be sure to draw

arrows to specify where you are labeling!

Analyzing Inheritance: A human’s DNA code, found in

nearly all body cells, can be condensed into chromosomes.

2. How many chromosomes do humans have total in each

*body cell? ____________

3. How many of those chromosomes in each human *body

cell are from the mother? ____________

4. How many of those chromosomes in each human *body

cell are from their father? ____________

5. How many pairs of chromosomes are there in each

human *body cell? __________

6. When looking at each pair, how many chromosomes in

each pair come from the mother? _______ Father? ______

*some exceptions

7. Working with the Vocabulary: In your own words, explain how a person may taste the bitterness of PTC by using the

following vocabulary words in your explanation (choose any order): trait, gene, genotype, phenotype, and alleles.

Underline each word as you use it in your explanation. In this explanation, you can treat PTC taste sensitivity as a single-

gene trait. [As mentioned in the video, it may be more complex than a single-gene trait.]

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AS alleles and genes - notes

Introduction to Statistics (BIO) (STAT 1221)