Basic Punnett Square

Both parents in this Punnet square

• are homozygous dominant
• are homozygous recessive
• are heterozygous
• have blue eyes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Axial flowers is dominant to terminal. What is the probabilty of offspring being terminal?

• 1/4
• 2/4
• 3/4
• 4/4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The genotypic ratio here is

• 25% blue eye 75 % brown eye 
• BB = 25% Bb = 50% bb = 25%
• BB= 50 % bb = 50%
• All brown eye

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

How many boxes would say BB?

• 1
• 2
• 4
• 0

Tags

NGSS.HS-LS3-1

Brown is dominant to green. What is the probability of these parents having green offspring?

• 1/4

• 2/4

• 3/4

• 4/4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the genotypic ratio here

• TT = 25% Tt= 50% tt=25%
• all tall
• TT= 75% tt = 25%
• Tt = 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

The dominant trait is

• yellow pea seeds
• green pea seeds
• there is no dominant seed
• Jolly green giant

Tags

NGSS.HS-LS3-1

To be a yellow seed genotype must be

• aa
• Aa
• AA
• AA or Aa

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

To express the recessive trait you must be

• homozygous dominant
• heterozygous
• alleleerific
• homozygous recessive

Tags

NGSS.HS-LS3-1

A Punnet Square will 

• tell you exactly what your offspring will look like
• increase the chance you pass on recessive traits
• predict genotypes and phenotypes in offspring
• have no purpose but for Taylor to give us extra assignments

Tags

NGSS.HS-LS3-1