genes quiz

What does it mean to be a carrier of a trait?

• A carrier has two copies of a dominant allele and expresses the trait.

• A carrier has one copy of a recessive allele and can pass it on to offspring without expressing the trait.

• A carrier has no copies of the allele and cannot pass it on to offspring.

• A carrier expresses the trait but cannot pass it on to offspring.

What is the significance of genetic mutations?

• They have no impact on traits.

• They can lead to new traits and variations, which can be beneficial, harmful, or neutral.

• They only cause harmful effects.

• They are always beneficial to the organism.

What is homozygous?

• Having two different alleles for a particular gene.

• Having two identical alleles for a particular gene.

• Having one allele for a gene.

• Having no alleles for a gene.

Do all offspring have the same traits from their parents?

• Yes, all offspring inherit the same traits from their parents.

• No, offspring can inherit different combinations of traits from their parents.

• Offspring only inherit traits from one parent.

• All offspring have unique traits that are not related to their parents.

What is a phenotype?

• The genetic makeup of an organism.

• The observable physical or biochemical characteristics of an organism, determined by its genotype.

• The process by which organisms adapt to their environment.

• The evolutionary history of a species.

What is an allele?

• A type of chromosome that determines physical traits.

• A variant form of a gene that can produce different traits.

• A process of cell division that leads to genetic variation.

• A structure that carries genetic information in the form of DNA.

What is the difference between dominant and recessive alleles?

• Dominant alleles require two copies to express their trait, while recessive alleles express their trait with only one copy.

• Dominant alleles express their trait even if only one copy is present, while recessive alleles require two copies to express their trait.

• Dominant alleles are always more common in a population than recessive alleles.

• Recessive alleles can never be expressed in the presence of dominant alleles.

What is heterozygous?

• Having two identical alleles for a particular gene.

• Having two different alleles for a particular gene.

• Having no alleles for a particular gene.

• Having multiple alleles for a particular gene.

What is a trait?

• A characteristic or feature of an organism, such as hair color or eye color.

• A type of genetic mutation that affects an organism's development.

• A behavior that is learned through experience and environment.

• A temporary condition that affects an organism's health.

What is genetic variation?

• Genetic variation refers to the differences in DNA among individuals, which can lead to different traits.

• Genetic variation is the process by which organisms adapt to their environment over time.

• Genetic variation is the uniformity of DNA sequences among individuals in a population.

• Genetic variation refers to the similarities in DNA among individuals, which can lead to identical traits.