Genetics Lessons

What is the probability of heterozygous offspring?

• 25%

• 50%

• 0%

• 100%

Tags

NGSS.HS-LS4-3

What allele combination should go in the missing box?

• AA

• Aa

• aa

• none of these

Tags

NGSS.MS-LS3-2

What is the phenotype of the offspring? (A-Brown hair; a-blond hair)

• 50 % Brown Hair and 50% Blond Hair

• 25 % Brown Hair and 75% Blond Hair

• 75 % Brown Hair and 25% Blond Hair

• 0% Brown Hair and 100% Blond Hair

Tags

NGSS.MS-LS3-2

What is a dominant allele?

• A trait that is always shown (capital letter)

• A trait that can be hidden (lower case letter)

• Alleles that are the same

• Alleles that are different

This image shows a...

• Punnett Square

• Phenotype

• Genotype

• Dominant allele

Tags

NGSS.HS-LS3-1

What does heterozygous mean?

• An organism that has the same genes for a trait (TT or tt)

• An organism that has different genes for a trait (Tt)

• When neither gene is fully dominant; offspring is a mixture of both

• the different forms of a trait (hair color--> brown, blonde, red

If a heterozygous parent and a homozygous recessive parent mate, what percentage of their offspring will be dominant?

• 25%

• 50%

• 75%

• 100%

What did Gregor Mendel study?

• Mold Spores

• Pea Plants

• Sun Flowers

• Rats

tt

• Dominant 

• Recessive

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

• 0 %

• 25%

• 50%

• 75%