Genetics (Set 2) (Monohybrid Punnett Squares)

Select the GENOTYPE

• Green

• Gg

• yellow

• homozygous

Select the genotype that is homozygous dominant

• AA

• Aa

• aa

What's an allele?

• a version of a gene

• the observable characteristic of a trait

Tags

NGSS.HS-LS3-2

Select the genotype that is homozygous recessive

• AA

• Aa

• aa

Select the genotype that is heterozygous

• AA

• Aa

• aa

Parent 1: BB

Parent 2: Bb

Make a Punnett square. How many offspring are "Bb"?

• 2 out of 4

• 1 out of 4

• 3 out of 4

• 0 out of 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

What's a gene

• a piece of DNA that codes for a trait

• one whole chromosome

• one whole sister chromatid

• an entire "recipe book" for traits

Tags

NGSS.HS-LS3-1

NGSS.HS-LS1-1

Select the heterozygous genotype

• Aa

• aa

• AA

Select the homozygous genotype(s)

• AA

• Aa

• aa

B = black fur; b = brown fur

Parent 1: Bb

Parent 2: BB

What are the possible GENOTYPES of the offspring?

• BB or Bb

• Bb only

• Black fur only

• Bb or bb

• Black or brown fur

Answer explanation

homozygous recessive = aa

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2