Unit 7: Genetics

What scientist is known for inventing Punnett Squares to predict probability of traits?

• Francis Crick

• Gregor Mendel

• Rosalind Franklin

• James Watson

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Gregor Mendel did is genetics studies on pea plants because they made a good _____________ organism.

• Model

• Example

• Scientific

• Experimental

Alleles separating during Meiosis so only one is passed from parent to offspring is known as Mendel's Law of what?

• Independent Assortment

• Dominance

• Heredity

• Segregation

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NGSS.HS-LS3-2

If a pea plant's alleles for height are tt, what must be true of the parents?

T = Tall Allele t = Short Allele

• Both parents were short

• Both parents were tall

• Both parent contributed a tall allele

• Both parents contributed a short allele

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Alleles are different forms of a single _________.

• Genotype

• Phenotype

• Gene

• Trait

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NGSS.HS-LS3-2

Phenotype refers to an organisms what?

• Physical appearance

• Combination of alleles

• Chromosomes

• Genes

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Mendel's law of Dominance says that ____________.

• A dominant trait requires two dominant alleles

• A recessive trait masks a dominant trait

• Phenotypes are dominant when two recessive alleles are present

• Only one dominant allele is required to result in a dominant phenotype

An organisms genetic combination for a trait is know as its what?

• Chromosomes

• Genotype

• Phenotype

• Traits

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NGSS.HS-LS3-1

Which of the following is a homozygous dominant genotype?

• Hh

• Tt

• rr

• BB

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Gametes (sex cells) are produced by what biological process?

• Mitosis

• Crossing Over

• Photosynthesis

• Meiosis

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NGSS.HS-LS3-2