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Chromosomes, Genes and Alleles Review

Total questions: 10

Worksheet time: 2hrs 6mins

Name
Class
Date
1.

Think back to the amoeba sisters video...hair color and eye color are examples of a person's....

a)

recessive traits

b)

dominant alleles

c)

genotype

d)

phenotype

2.

The structure in the image is called a:

a)

Chromosome

b)

Karyotype

c)

Gene

d)

Protein

3.

A gene is a section of a DNA molecule that has the code for specific proteins...that will determine a specific trait...which of the following is an example of a gene? Check all that apply!

a)

flower color

b)

plant height

c)

fur color

d)

hair type

4.

Different versions of a gene are called ALLELES ...and they will lead to different examples of a trait. Which of the following are alleles? Check all that apply.

a)

blue eyes; brown eyes

b)

eye shape; hair color

c)

purple flowers; white flowers

d)

face shape

5.
How tall you are is an example of
a)
genotype
b)
phenotype
6.

(a)   alleles are represented by a capital letter like "B".

7.

The allele/letter combinations are called:

a)

genetics

b)

mitosis

c)

genotype

d)

phenotype

8.

Different alleles (for example B / b) will have different DNA sequences.

a)

True

b)

False

9.

The chromosome that you get from the sperm & egg cell can carry different alleles / different DNA codes

a)

True

b)

False

10.

**Challenge: Meiosis is the process that makes sperm cells in testes and egg cells in ovaries. The...

a)

sperm cells all have the exact same chromosomes & the egg cells all have the exact same chromosomes

b)

sperm cells all have the exact same chromosomes but the egg cells each have unique/different chromosomes

c)

sperm cells each have unique combination of chromosomes & the egg cells each have unique combination of chromosomes