Middle School Biology

The genotype of an organism describes the

• codons that make up the genes

• number of gene's on the chromosmes

• genetic make-up of a trait

• type of chromosomes in the nucleus

Which term describes the different forms of a gene

• Chromosome

• Allele

• DNA

• Punnett Squares

Aa, DD, Bb, yy are all examples of _______

• genotypes

• phenotypes

G = green, g = yellow
The genotype for a yellow plant is...

• GG

• Gg

• gg

• all of the choices result in yellow

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following is homozygous dominant?

• Yy

• Y

• yy

• YY

Genotype or Phenotype: Black hair

• Phenotype

• Genotype

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

If "T" is the allele for tall and "t" is the allele for short, then Tt would produce?

• tall

• short

• medium

• not enough info

Tags

NGSS.HS-LS3-1

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

• 0 %

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

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

Dominant: AA or Aa

Recessive: aa

• 0 in 4

• 1 in 4

• 2 in 4

• 4 in 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Cross Two Homozygous plants
(RRYY x rryy)
R = round seeds, r  = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds? 

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.MS-LS3-2