Genetics and Heredity Practice

What is the term for the physical appearance of a trait?

• Genotype

• Phenotype

• Allele

• Chromosome

Which scientist is known as the father of genetics?

• Charles Darwin

• Isaac Newton

• Gregor Mendel

• Albert Einstein

What is a Punnett Square used for?

• To determine the chemical composition of genes

• To predict the outcome of genetic crosses

• To measure the length of DNA strands

• To identify genetic diseases

What does it mean if a trait is "dominant"?

• It is the most common trait in a population.

• It hides the effect of a recessive trait when present.

• It is always harmful to the organism.

• It can only be inherited from one parent.

What are alleles?

• Tiny organisms that live inside genes

• Different versions of a gene

• Structures that hold together chromosomes

• The physical traits that an organism displays

How many alleles do you inherit for each trait from your parents?

• One from each parent, so two in total

• Two from each parent, so four in total

• One in total, from either your mother or your father

• It varies depending on the trait

What is a genotype?

• The physical appearance of a trait

• The genetic makeup of an organism

• A type of gene that determines hair color

• A tool used to predict genetic outcomes

What does homozygous mean?

• Having two different alleles for a trait

• Having two identical alleles for a trait

• Having no alleles for a trait

• Having one dominant and one recessive allele

What does heterozygous mean?

• Having two different alleles for a trait

• Having two identical alleles for a trait

• Having no alleles for a trait

• Having one dominant and one recessive allele

What is genetic variation?

• The lack of differences among individuals in a population

• The uniformity of traits in a species

• Differences in the genetic makeup among individuals within a population

• The study of heredity