Genetics Review

What was (the father of genetics) Gregor Mendel's contribution to science?

• described inheritance between parent and offspring

• first to study plants

• discovered DNA

• first to record experiments

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What happens to alleles during "law of segregation?"

• they separate when forming gametes (sperm and egg)

• all are homozygous

• all are heterozygous

• they separate when forming somatic (skin) cells

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What term means the physical characteristics or appearance of an organism?

• genotype

• phenotype

• dominant

• recessive

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An organism that is a hybrid is considered to be-

• homozygous

• heterozygous

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An organism that is a purebred is considered to be-

• homozygous

• heterozygous

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What is the genotype of the missing parent in the punnett square?

• BB

• Bb

• bb

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What will be the genotypes of the offspring from the punnett square in the picture?

• 0 BB; 2 Bb; 2 bb

• 2 BB; 2 Bb; 0 bb

• 0 BB; 4 Bb; 0 bb

• 1 BB; 2 Bb; 1 bb

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NGSS.HS-LS3-1

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Alleles are-

• different gene combinations (alternate pairs of a gene)

• physical features

• only recessive

• chromosomes

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What is an alternate form of a gene called? (Variations in genes)

• alleles

• phenotype

• punnett squares

• homozygous

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Law that states the dominant allele will always be expressed when present.

• law of segregation

• law of dominance

• law of conservation

• law of matter

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