Variations in Genetics

True or False: Selective breeding is controlled by humans.

• True

• False

What is the study of how traits are passed from parents to offspring?

• biology

• botany

• molecular biology

• genetics

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Who is the Father of Genetics?

• Robert Hooke

• Gregor Mendel

• Albert Einsten

• Albert Wegener

What is the genetic makeup of an organism?

• genotype

• phenotype

• gene type

• comparative alleles

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What are the different variations of a gene ?

• mutation

• genotype

• phenotype

• allele

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What is the physical expression of a trait?

• genotype

• mutation

• genetic disorder

• phenotype

What does heterozygous mean?

• the different forms of a trait (red hair, brown hair, etc)

• when an organism has two of the same alleles for a trait (ex. RR)

• when an organism has two different alleles for a trait (ex.Tt)

• neither gene is dominant over the other and a blend of both traits appear in the offspring

What is the name of this diagram?

• Inheritance square

• Genotype 4 square

• Pedigree

• Punnett Square

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What does homozygous mean?

• when an offpsring has 2 of the same alleles for a trait

• when an offspring has 2 different allels for a trait

• when the offspring only has 1 allele for a trait

• when the offspring has 2 alleles for a trait

A homozygous dominant chicken with black fur is crossed with a heterozygous chicken with black fur. What are the percentages of the possible genotypes?

• 50% BB and 50% Bb

• 25% BB and 75%Bb

• 75% BB and 25% Bb

• 100% BB

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