Monohybrid Crosses

Description: This quiz assesses your understanding of monohybrid crosses, a fundamental concept in genetics that explores the inheritance patterns of a single gene.
Number of Questions: 15
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Tags: genetics monohybrid crosses inheritance alleles genotypes phenotypes
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In a monohybrid cross, what is the term used to describe the two different forms of a gene?

  1. Alleles

  2. Genotypes

  3. Phenotypes

  4. Gametes


Correct Option: A
Explanation:

Alleles are different versions of a gene that occupy the same locus on homologous chromosomes.

What is the term used to describe the genetic makeup of an individual?

  1. Alleles

  2. Genotypes

  3. Phenotypes

  4. Gametes


Correct Option: B
Explanation:

Genotype refers to the combination of alleles an individual possesses for a particular gene or set of genes.

What is the term used to describe the observable characteristics of an individual?

  1. Alleles

  2. Genotypes

  3. Phenotypes

  4. Gametes


Correct Option: C
Explanation:

Phenotype refers to the observable characteristics or traits of an individual, resulting from the interaction of their genotype with the environment.

In a monohybrid cross, what is the term used to describe the sex cells (eggs and sperm) that carry genetic information from one generation to the next?

  1. Alleles

  2. Genotypes

  3. Phenotypes

  4. Gametes


Correct Option: D
Explanation:

Gametes are the sex cells (eggs and sperm) that carry genetic information from one generation to the next.

In a monohybrid cross, what is the term used to describe the offspring of a cross between two individuals?

  1. Alleles

  2. Genotypes

  3. Phenotypes

  4. Progeny


Correct Option: D
Explanation:

Progeny refers to the offspring of a cross between two individuals.

In a monohybrid cross, what is the term used to describe the cross between two individuals with different alleles for a particular gene?

  1. Homozygous Cross

  2. Heterozygous Cross

  3. Dominant Cross

  4. Recessive Cross


Correct Option: B
Explanation:

A heterozygous cross is a cross between two individuals with different alleles for a particular gene.

In a monohybrid cross, what is the term used to describe the cross between two individuals with the same alleles for a particular gene?

  1. Homozygous Cross

  2. Heterozygous Cross

  3. Dominant Cross

  4. Recessive Cross


Correct Option: A
Explanation:

A homozygous cross is a cross between two individuals with the same alleles for a particular gene.

In a monohybrid cross, what is the term used to describe the allele that is expressed in the phenotype of an individual?

  1. Dominant Allele

  2. Recessive Allele

  3. Homozygous Allele

  4. Heterozygous Allele


Correct Option: A
Explanation:

A dominant allele is an allele that is expressed in the phenotype of an individual, even if the individual also carries a recessive allele for the same gene.

In a monohybrid cross, what is the term used to describe the allele that is not expressed in the phenotype of an individual?

  1. Dominant Allele

  2. Recessive Allele

  3. Homozygous Allele

  4. Heterozygous Allele


Correct Option: B
Explanation:

A recessive allele is an allele that is not expressed in the phenotype of an individual unless the individual carries two copies of the allele.

In a monohybrid cross, what is the term used to describe an individual that carries two identical alleles for a particular gene?

  1. Homozygous Dominant

  2. Homozygous Recessive

  3. Heterozygous Dominant

  4. Heterozygous Recessive


Correct Option: A
Explanation:

A homozygous dominant individual carries two copies of the dominant allele for a particular gene.

In a monohybrid cross, what is the term used to describe an individual that carries two different alleles for a particular gene?

  1. Homozygous Dominant

  2. Homozygous Recessive

  3. Heterozygous Dominant

  4. Heterozygous Recessive


Correct Option:
Explanation:

A heterozygous individual carries two different alleles for a particular gene.

In a monohybrid cross, what is the term used to describe an individual that carries two copies of the recessive allele for a particular gene?

  1. Homozygous Dominant

  2. Homozygous Recessive

  3. Heterozygous Dominant

  4. Heterozygous Recessive


Correct Option: B
Explanation:

A homozygous recessive individual carries two copies of the recessive allele for a particular gene.

In a monohybrid cross, what is the term used to describe the phenotypic ratio of a cross between two heterozygous individuals?

  1. 3:1

  2. 1:2:1

  3. 9:3:3:1

  4. 1:1


Correct Option: A
Explanation:

The phenotypic ratio of a cross between two heterozygous individuals is 3:1 (dominant phenotype : recessive phenotype).

In a monohybrid cross, what is the term used to describe the genotypic ratio of a cross between two heterozygous individuals?

  1. 3:1

  2. 1:2:1

  3. 9:3:3:1

  4. 1:1


Correct Option: B
Explanation:

The genotypic ratio of a cross between two heterozygous individuals is 1:2:1 (homozygous dominant : heterozygous : homozygous recessive).

In a monohybrid cross, what is the term used to describe the law that states that alleles segregate independently of each other during gamete formation?

  1. Law of Independent Assortment

  2. Law of Segregation

  3. Law of Dominance

  4. Law of Recessiveness


Correct Option: B
Explanation:

The law of segregation states that alleles segregate independently of each other during gamete formation.

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