Benchmark #3 review 1

The physical expression of a trait is called the ...

• genotype

• phenotype

Tags

NGSS.HS-LS1-1

Segments of DNA that code for traits are called ....

• genes

• proteins

• alleles

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Genotype: TT

• homozygous dominant

• homozygous recessive

• heterozygous dominant

Which of the following is correct?

• Yy is homozygous dominant.

• YY is heterozygous.

• yy is homozygous recessive.

• YY is homozygous recessive.

Tags

NGSS.HS-LS3-2

Which of the following represents a heterozygous genotype?

• Aa

• AA

• aa

• Ab

Which of the following best describes Mendel's law of dominance?

• When an organism has two different alleles of the same gene, both genes will be expressed equally.

• When an organism has two alleles, one of genes will be expressed and the other will be hidden.

• When an organism has two different alleles of the same gene, one will always be dominant.

• The stronger of the two genes will be expressed.

If the dominant trait is having freckles (F) and the recessive trait is no freckles (f), which allele combination(s) below would represent a person who has freckles? (select all that apply)

• FF

• Ff

• ff

Tags

NGSS.HS-LS3-1

NGSS.HS-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.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

The combination of genes a person has, represented by letters, is their...

• Genotype

• Phenotype

• Chromosome

• Punnett Square

Tags

NGSS.HS-LS3-1

What belongs in the last box?

• RR

• Rr

• rr

• ff

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2