NGSS.1-LS3-1

T - tall and t = short
In the punnett square below, what belongs in the missing square

• tt
• Tt
• Bb
• TT

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NGSS.1-LS3-1

If the dominant allele (B) represents brown hair and the recessive allele (b) represents blonde hair, which offspring represents a homozygous recessive genotype?

• BB
• brown
• blonde
• bb

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NGSS.1-LS3-1

A genetic cross only using one trait is referred to as _____

• a monohybrid
• a punnett square
• a heredity chart
• an allele

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NGSS.1-LS3-1

W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?

• none
• 3/4
• 1/2
• all

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NGSS.1-LS3-1

Which of the following alleles is the genotype for a short winged fly. If long wings is dominant over short.

• Tt
• tt
• long wings
• purebred recessive

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NGSS.1-LS3-1

Recessive alleles are represented by a:

• genotype
• lowercase letter
• capital letter
• phenotype

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NGSS.1-LS3-1

Two heterozygous (Tt)tall pea plants are crossed. Which describes their offspring?

• 50% tall and 50% short
• 75%tall and 25% short
• 100%short

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NGSS.1-LS3-1

Pea plants can have green or yellow seeds. In a pea plant that is heterozygous for seed color, the allele for yellow seeds masks the effects of the allele of green seeds. Which of the following terms best describes the allele for yellow seeds?

• purebred
• recessive
• dominant
• monohybrid

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NGSS.1-LS3-1

Which of the following alleles is purebred dominant?

• Tt
• tt
• TT
• T

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NGSS.1-LS3-1

What is this image showing?

• DNA
• Chromosome
• Alleles
• Phenotype

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NGSS.1-LS3-1