Genetics Pretest

Genes, the units of heredity, are located along structures called:

• ribosomes
• genosomes
• nuclei
• chromosomes

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NGSS.HS-LS3-1

A giant squid has 48 chromosomes inside its eyeball cells. Therefore, a female squid has ___ chromosomes inside each of her egg cells.

• 48
• 24
• 96
• not enough info given

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NGSS.HS-LS3-1

Both parents in this Punnet square

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

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NGSS.HS-LS3-1

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

• 1/4
• 2/4
• 3/4
• 4/4

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NGSS.HS-LS3-1

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The genotypic ratio here is

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

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NGSS.HS-LS3-1

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How many boxes would say BB?

• 1
• 2
• 4
• 0

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NGSS.HS-LS3-1

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

• 1/4

• 2/4

• 3/4

• 4/4

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NGSS.HS-LS3-3

What is the genotypic ratio here

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

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NGSS.HS-LS3-3

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The dominant trait is

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

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NGSS.HS-LS3-1

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To be a yellow seed genotype must be

• aa
• Aa
• AA
• AA or Aa

Tags

NGSS.HS-LS3-1