Biology Genetics Quiz

What is the study of genes and heredity called?

• Chemistry

• Genetics

• Physics

• Biology

Where are genes located in a cell?

• Genes are located in the nucleus of a cell.

• Genes are located in the cytoplasm of a cell.

• Genes are located in the cell membrane of a cell.

• Genes are located in the mitochondria of a cell.

What is the function of DNA in genetics?

• DNA serves as the genetic material that stores and transmits hereditary information.

• DNA functions as a structural protein in cells.

• DNA is responsible for producing energy in the body.

• DNA plays a role in regulating blood sugar levels.

What is a Punnett square used for in genetics?

• Determining the dominant traits in an individual

• Predicting possible genotypes of offspring in a genetic cross

• Calculating the probability of a genetic disorder

• Identifying the gender of an organism

What is the difference between genotype and phenotype?

• Genotype is the genetic makeup, while phenotype is the physical characteristics.

• Genotype and phenotype are the same thing

• Genotype refers to physical characteristics, while phenotype refers to genetic makeup

• Genotype is only relevant for plants, while phenotype is only relevant for animals

Explain the terms homozygous and heterozygous in genetics.

• Homozygous: Two recessive alleles for a gene. Heterozygous: Two dominant alleles for a gene.

• Homozygous: Two different alleles for a gene. Heterozygous: Two identical alleles for a gene.

• Homozygous: Two identical alleles for a gene. Heterozygous: Two different alleles for a gene.

• Homozygous: Two alleles with unknown functions. Heterozygous: Two alleles with known functions.

What is a dominant gene?

• A dominant gene is a gene that is always recessive

• A dominant gene is a gene that is expressed phenotypically in an individual when only one copy is present in the genotype.

• A dominant gene is a gene that is only expressed in males

• A dominant gene is a gene that skips generations

What is a recessive gene?

• A gene that is only expressed when an individual has one copy of it

• A gene that is not inherited

• A gene that is only expressed when an individual has two copies of it.

• A gene that is always dominant in an individual

How do mutations play a role in genetics?

• Mutations play a role in genetics by introducing genetic diversity and driving evolution.

• Mutations are only beneficial in rare cases

• Mutations always result in negative outcomes

• Mutations have no impact on genetics

What is genetic variation and why is it important?

• Genetic variation is only important for cosmetic reasons

• Genetic variation is the same in all individuals within a population

• Genetic variation is the diversity in DNA sequences among individuals within a population. It is important for adaptation, evolution, and population health.

• Genetic variation has no impact on evolution