Genetics Practice Quiz: Trivia Test!

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1. Who is considered the "Father of Genetics"?

Explanation

Gregor Mendel discovered many principles of heredity in the 1800s by working with pea plants.

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About This Quiz
Genetics Practice Quiz: Trivia Test! - Quiz


Genetics is the study of how different traits such as hair color and texture, eye color, and disease risk are passed down or inherited from parent to offspring.... see moreGenetics helps to clarify what makes you unique as an individual. This quiz asks questions like who is considered the father of genetics, what does homozygous recessive genotype mean, and what happens to a chromosome during meiosis. Make sure you take your certificate after the quiz. see less

2. Which of the following is a homozygous dominant genotype?

Explanation

Homozygous indicates that the alleles are the same and dominant tells us that the alleles are represented by capital letters.

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3. Only males have this chromosome

Explanation

Females = XX
Males = XY

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4. Both males and females have this chromosome.

Explanation

All people have at least one X chromosome. XX = female XY = male

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5. A human body cell contains 46 chromosomes. How many chromosomes does a human gamete contain?

Explanation

Gametes are haploid cells. They contain half the number of chromosomes as a normal body (somatic) cell.

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6. Most sex-linked genes are found on the

Explanation

Sex-linked genes are genes that are located on the sex chromosomes, which determine the sex of an individual. The Y chromosome is responsible for determining male characteristics, while the X chromosome is responsible for determining both male and female characteristics. Therefore, it is more likely for sex-linked genes to be found on the X chromosome rather than the Y chromosome or any other chromosome.

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7. For the genotype below determine what phenotypes are possible. Purple flowers are dominant to white flowers.

Explanation

The genotype PP represents a homozygous dominant individual, which means they have two copies of the dominant allele for purple flowers. Therefore, their phenotype will be purple. The genotype pp represents a homozygous recessive individual, which means they have two copies of the recessive allele for white flowers. Therefore, their phenotype will be white. The genotype Pp represents a heterozygous individual, which means they have one copy of the dominant allele and one copy of the recessive allele. In this case, the dominant allele for purple flowers will determine the phenotype, so their phenotype will be purple.

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8. Which of the following is a heterozygous genotype?

Explanation

Heterozygous means different or one of each type of allele: dominant and recessive.

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9. Another name for haploid cells are _________.

Explanation

Gametes must be haploid in order for the zygote to receive the correct number of chromosomes.

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10. A diploid cell has _____ set(s) of homologous chromosomes.

Explanation

Di means two so the word diploid means two sets of chromosomes. Diploid cells are produced during mitosis.

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11. Number of chromosomes in the human cells

Explanation

The number of chromosomes in human cells is forty-six, which is also represented as 46. Chromosomes are thread-like structures that carry genetic information in the form of DNA. In humans, each cell typically contains 23 pairs of chromosomes, making a total of 46. These chromosomes determine various traits and characteristics of an individual.

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12. In a monohybrid cross, when a homozygous dominant individual is crossed with a homozygous recessive individual all of the offspring will be __________.

Explanation

TT x tt = 100% Tt

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13. In a monohybrid cross, when two heterozygous individuals are crossed the genotypic ratio will be _______________.

Explanation

Tt x Tt = 1 TT: 2 Tt: 1 tt

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14. Type of factor or gene that can be masked or hidden by a dominant one

Explanation

A recessive factor or gene is one that is not expressed or visible when a dominant factor or gene is present. This means that the dominant factor or gene "masks" or hides the recessive one, preventing it from being seen or having an effect. In order for a recessive factor or gene to be expressed, both copies of the gene must be recessive, meaning that it is inherited from both parents. If only one copy is recessive and the other is dominant, the dominant gene will be expressed and the recessive one will be masked.

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15. Haploid cells are formed during the process of ____________.

Explanation

Meiosis produces gametes which are haploid cells so that when a male and a female gamete meet in the process of fertilization the resulting zygote has the full number of chromosomes to produce a healthy individual.

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16. The types of cells produced during mitosis are _________.

Explanation

Mitosis produces a cell that is exactly like the parent cell, with the full number of chromosomes.

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17. The possible form of a gene is called a(n) _____________.

Explanation

Mendel dubbed the different forms of gene alleles. In a monohybrid cross, the two alleles are dominant and recessive.

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18. A haploid cell has _______ set(s) of chromosomes.

Explanation

Ha refers to half so a haploid cell contains only one set of chromosomes. Gametes are haploid cells.

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19. What happens to the chromosome number during meiosis?

Explanation

Meiosis cuts the number of chromosomes in the parent cell in half to produce two haploid cells.

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20. The gamete of a fruit fly contains 4 chromosomes. How many chromosomes does a cell from the fruit fly's wing contain?

Explanation

A gamete (egg or sperm) contains half the number of chromosomes of a cell from anywhere on the organism's body.

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21. A normal man has 4 daughters, 4 sons, and 12 grandchildren. A daughter and a son have inherited a certain disease but the grandchildren are unaffected. This is an example of

Explanation

Autosomal recessive traits are only expressed in people if they are homozygous recessive. Autosomal means that the trait is inherited regardless of gender.

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22. Which of the following is a homozygous recessive genotype?

Explanation

A homozygous recessive genotype is one in which both alleles for a particular gene are recessive. In this case, the genotype "tt" represents two recessive alleles, while "TT" represents two dominant alleles and "Tt" represents one dominant and one recessive allele.

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23. Which of the following are true of gametes?

Explanation

Gametes are formed during meiosis, which is a type of cell division that produces haploid cells. Haploid cells contain half the number of chromosomes compared to the parent cell. Examples of gametes are eggs and sperm, which are reproductive cells in females and males, respectively. When gametes fuse during fertilization, they form a diploid cell, which contains the full set of chromosomes. Therefore, the statement "are formed during meiosis, are haploid cells, examples are eggs and sperm, when joined form a diploid cell" is true.

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Who is considered the "Father of Genetics"?
Which of the following is a homozygous dominant genotype?
Only males have this chromosome
Both males and females have this chromosome.
A human body cell contains 46 chromosomes. How many chromosomes does a...
Most sex-linked genes are found on the
For the genotype below determine what phenotypes are possible....
Which of the following is a heterozygous genotype?
Another name for haploid cells are _________.
A diploid cell has _____ set(s) of homologous chromosomes.
Number of chromosomes in the human cells
In a monohybrid cross, when a homozygous dominant individual is...
In a monohybrid cross, when two heterozygous individuals are crossed...
Type of factor or gene that can be masked or hidden by a dominant one
Haploid cells are formed during the process of ____________.
The types of cells produced during mitosis are _________.
The possible form of a gene is called a(n) _____________.
A haploid cell has _______ set(s) of chromosomes.
What happens to the chromosome number during meiosis?
The gamete of a fruit fly contains 4 chromosomes. How many chromosomes...
A normal man has 4 daughters, 4 sons, and 12 grandchildren. A daughter...
Which of the following is a homozygous recessive genotype?
Which of the following are true of gametes?
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