8th Genetics Prequiz

How many alleles (letters) does each person carry for a trait?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS3-1

How many alleles (letters) does a child get from each parent for each trait?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Dominant alleles are represented by a:

• Male gene
• lowercase letter
• recessive trait
• capital letter

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

What you see, or the physical appearance is often referred to as ______________.

• Genotype

• Phenotype

• Homozygous

• Heterozygous

B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.

• they have same phenotype and genotype
• they have different genotypes and phenotypes
• they have same phenotype but different genotypes
• they have same genotype but different phenotypes

Tags

NGSS.HS-LS3-1

Aa is

• homozygous
• heterozygous

Tags

NGSS.HS-LS4-3

Which of the following is a phenotype?

• Aa
• red hair
• heterozygous
• DNA

What ratio of the offspring from the cross shown will be homozygous recessive for the  trait of tallness? 

• 0 in 4
• 1 in 4
• 2 in 4
• 4 in 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa