Unit 7 Genetics

Terms

100

This term describes the physical representation of a trait

a. genotype

b. phenotype

c. gene

b. phenotype

200

This term describes a segment of DNA

a. phenotype

b. allele

c. gene

c. gene

300

This term describes different forms (versions) of a gene

a. phenotype

b. allele

c. gene

b. allele

400

This term describes the 2 letter genetic code for a trait

a. genotype

b. phenotype

c. gene

a. genotype

500

This term describes when BOTH alleles are THE SAME

a. homozygous/purebred

b. heterozygous/hybrid

c. dominant

a. homozygous 

Write the phenotype

100

Write the genotype for a normal male

a. XY

b. XX

c. X^hY

a. XY

200

Write the genotype for someone who is homozygous dominant

a. BB

b. Bb

c. bb

a. BB

300

Write the genotype for a female affected by an X linked trait. 

a. XY

b. X^hX^h

c. XX

b. X^hX^h

400

Write the genotype for a normal female.

a. XY

b. X^hX^h

c. X^HX^H

c. X^HX^H

500

Write the genotype for a carrier.

a. X^HY^h

b. X^HX^h

c. XX

b. X^HX^h

Identify the genotype

100

Identify the following genotype: AA

a. Homozygous Dominant

b. Heterozygous

c. Homozygous Recessive

a. Homozygous Dominant

200

Identify the following genotype: ee

a. Homozygous Dominant

b. Heterozygous

c. Homozygous Recessive

c. Homozygous Recessive

300

Identify the following genotype: Bb

a. Homozygous Dominant

b. Heterozygous

c. Homozygous Recessive

b. Heterozygous

400

Blue feathers (F) are dominant to yellow feathers (f)

What are the possible genotypes for blue feathers?

a. FF

b. Ff

c. ff

a. FF

b. Ff

500

Yellow peas are dominant to green peas.  (Yy)

Write out the genotype for green peas.

a. YY

b. Yy

c. yy

c. yy

Punnett Squares

100

Tall is dominant to short.  

Cross a homozygous dominant pea plant with a homozygous recessive pea plant.

What is the percentage chance of tall plants?

a. 25%

b. 50%

c. 100%

c. 100%

200

Cross a heterozygous brown haired man with a homozygous recessive blonde hair female.    What is the percent chance of a child with blonde hair?

a. 25%

b. 50%

c. 100%

b. 50%

300

Colorblindness is X linked recessive.   Cross a colorblind male with a carrier female.  What is the percent chance of any of their children being colorblind?

a. 0%

b. 50%

c. 100%

b. 50%

400

Colorblindness is an X linked recessive trait.  Cross a non affected male with a carrier female.  What is the chance of any of their children being colorblind?

a. 25%

b. 50%

c. 75%

a. 25%

500

A heterozygous brown hair man and a heterozygous brown haired woman have a child.  What is the chance the child will have brown hair?

a. 25%

b. 50%

c. 75%

c. 75%

Pedigree

100

On a pedigree, a circle represents a...

a. male

b. female

c. child

b. female

200

On a pedigree, if the trait shows up in every generation, it is likely...

a. dominant

b. recessive

a. dominant

300

On a pedigree, roman numerals indicate...

a. generations

b. individuals

c. number of individuals with the trait

a. generations

400

On a pedigree, horizontal lines connecting a square and a circle show that these 2 are...

a. siblings (brother and sister)

b. parents (may be married)

b. parents (may be married)

500

In a recessive pedigree, if 2 unshaded parents have a child who is shaded in.   The parent's genotypes must be...

a. AA

b. Aa

c. aa

b. Aa