Homozygous and Heterozygous

Description: Homozygous and Heterozygous Quiz
Number of Questions: 15
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Tags: genetics homozygous heterozygous
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What is the term used to describe an individual who has two identical alleles for a particular gene?

  1. Homozygous

  2. Heterozygous

  3. Dominant

  4. Recessive


Correct Option: A
Explanation:

Homozygous individuals have two identical alleles for a particular gene, meaning they will express the same trait for that gene.

What is the term used to describe an individual who has two different alleles for a particular gene?

  1. Homozygous

  2. Heterozygous

  3. Dominant

  4. Recessive


Correct Option: B
Explanation:

Heterozygous individuals have two different alleles for a particular gene, meaning they may express different traits for that gene.

In a heterozygous individual, which allele is expressed?

  1. Dominant allele

  2. Recessive allele

  3. Both alleles

  4. Neither allele


Correct Option: A
Explanation:

In a heterozygous individual, the dominant allele is expressed, while the recessive allele is masked.

In a homozygous individual, which allele is expressed?

  1. Dominant allele

  2. Recessive allele

  3. Both alleles

  4. Neither allele


Correct Option: C
Explanation:

In a homozygous individual, both alleles are identical, so both alleles are expressed.

What is the probability of a homozygous dominant offspring from a cross between two heterozygous parents?

  1. 25%

  2. 50%

  3. 75%

  4. 100%


Correct Option: A
Explanation:

In a cross between two heterozygous parents, the probability of a homozygous dominant offspring is 25%.

What is the probability of a homozygous recessive offspring from a cross between two heterozygous parents?

  1. 25%

  2. 50%

  3. 75%

  4. 100%


Correct Option: A
Explanation:

In a cross between two heterozygous parents, the probability of a homozygous recessive offspring is 25%.

What is the probability of a heterozygous offspring from a cross between two heterozygous parents?

  1. 25%

  2. 50%

  3. 75%

  4. 100%


Correct Option: B
Explanation:

In a cross between two heterozygous parents, the probability of a heterozygous offspring is 50%.

What is the term used to describe the alleles that are responsible for the same trait?

  1. Homozygous alleles

  2. Heterozygous alleles

  3. Dominant alleles

  4. Recessive alleles


Correct Option: A
Explanation:

Homozygous alleles are alleles that are responsible for the same trait.

What is the term used to describe the alleles that are responsible for different traits?

  1. Homozygous alleles

  2. Heterozygous alleles

  3. Dominant alleles

  4. Recessive alleles


Correct Option: B
Explanation:

Heterozygous alleles are alleles that are responsible for different traits.

What is the term used to describe the allele that is expressed in a heterozygous individual?

  1. Dominant allele

  2. Recessive allele

  3. Both alleles

  4. Neither allele


Correct Option: A
Explanation:

In a heterozygous individual, the dominant allele is expressed.

What is the term used to describe the allele that is masked in a heterozygous individual?

  1. Dominant allele

  2. Recessive allele

  3. Both alleles

  4. Neither allele


Correct Option: B
Explanation:

In a heterozygous individual, the recessive allele is masked.

What is the term used to describe the genotype of an individual who has two identical alleles for a particular gene?

  1. Homozygous

  2. Heterozygous

  3. Dominant

  4. Recessive


Correct Option: A
Explanation:

Homozygous individuals have two identical alleles for a particular gene.

What is the term used to describe the genotype of an individual who has two different alleles for a particular gene?

  1. Homozygous

  2. Heterozygous

  3. Dominant

  4. Recessive


Correct Option: B
Explanation:

Heterozygous individuals have two different alleles for a particular gene.

What is the term used to describe the phenotype of an individual who has two identical alleles for a particular gene?

  1. Homozygous

  2. Heterozygous

  3. Dominant

  4. Recessive


Correct Option: A
Explanation:

Homozygous individuals have two identical alleles for a particular gene, and they will express the same trait for that gene.

What is the term used to describe the phenotype of an individual who has two different alleles for a particular gene?

  1. Homozygous

  2. Heterozygous

  3. Dominant

  4. Recessive


Correct Option: B
Explanation:

Heterozygous individuals have two different alleles for a particular gene, and they may express different traits for that gene.

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