Genetics Review

Which of the following is the best definition for heredity?

• Heredity is the passing of particles from high concentration to low concentration.

• Heredity explains how DNA copies itself.

• Heredity is the passing of traits from parent to offspring.

• Heredity is the forming of clones.

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This scientist studied pea plants and was considered to be the "Father of Genetics".

• Reginald Punnett

• Gregor Mendel

• Charles Darwin

• Rosalind Franklin

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Which of the following is showing a genotype that would be described as homozygous recessive (purebred)

• Dd

• dd

• DD

• dD

The physical appearance of an organisms is also referred to as:

• genotype

• phenotype

• chromosome

• incomplete dominance

The genotype is:

• the genetic makeup of an organism.

• the physical appearance of an organism.

• the deletion of a chromosome.

• the passing of traits from parent to offspring.

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NGSS.HS-LS3-1

Which of the following is true regarding inheriting traits:

• Dominant traits are less likely to be seen.

• You must have only one recessive gene in order to express the trait.

• The recessive trait always is seen over the dominant trait.

• Dominant traits are more likely to be expressed because you only need one gene.

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Which of the following shows a genotype that would be considered homozygous? Choose all that apply.

• GG

• gg

• Gg

• Bb

• bb

An allele is:

• different genes that code for different characteristics.

• different chromosomes.

• different forms of the same gene.

• section of the nucleus that forms chromosomes.

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B=brown eyes
b= blue eyes
What is true about two brothers that have brown eyes?
One has genotype BB the other Bb.

• they have same phenotype and genotype
• they have different genotypes and phenotypes
• they have same phenotype but different genotypes
• they have same genotype but different phenotypes

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In mussels, the allele for brown coloring (B) is dominant, and the allele for blue coloring(b) is recessive. For which parental genotypes are 100% of the offspring expected to be blue?

• BbxBb
• bbxbb
• BBxbb
• BBxBB

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