Review Test Unit 6 Genetics

What is a Punnett Square used for in genetics?

• It is used to determine the gender of an individual.

• It is used to calculate the speed of genetic mutations.

• It is used to predict the possible genotypes and phenotypes of offspring.

• It is used to analyze the evolutionary history of a species.

Explain the difference between genotype and phenotype.

• Genotype refers to plants, while phenotype refers to animals.

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

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

• Genotype and phenotype are interchangeable terms.

Describe the relationship between DNA and genes.

• Genes are made up of RNA

• DNA is a type of gene

• DNA contains genes, which are specific sequences of DNA that encode instructions for making proteins.

• DNA and genes are unrelated

In a Punnett Square, what do the letters represent?

• Alleles

• Nucleotides

• Genes

• Chromosomes

How does genotype influence phenotype?

• Genotype and phenotype are unrelated

• Genes contain the instructions for making proteins, which determine an organism's traits and characteristics.

• Phenotype determines genotype

• Genes have no impact on an organism's physical appearance

What is the difference between dominant and recessive traits?

• The main difference between dominant and recessive traits is in how they are expressed based on the presence of specific alleles.

• Dominant traits are always inherited from the mother, while recessive traits are inherited from the father.

• Dominant traits are always expressed physically, while recessive traits are only expressed in certain conditions.

• Dominant traits are more common in males, while recessive traits are more common in females.

How are traits passed down from parents to offspring?

• Through random chance

• Through genes inherited from parents.

• By telepathic communication

• Through magic spells

What is the role of genes in determining an organism's characteristics?

• Genes provide the blueprint for an organism's physical and biochemical traits.

• Genes have no impact on an organism's characteristics

• Genes are only responsible for an organism's size

• Genes only determine an organism's behavior

Explain the concept of genetic variation and its importance in evolution.

• Genetic variation allows for the survival of the fittest individuals in changing environments, leading to the accumulation of beneficial traits over generations.

• Genetic variation leads to identical offspring, reducing the chances of survival in changing environments.

• Genetic variation has no impact on the survival of species in evolving ecosystems.

• Genetic variation results in the elimination of all traits that are not immediately beneficial.

When a cell divides, what do we call the 2 new cells?

• parent cells

• daughter cells

• mother cells

• son cells