Mendelian Genetics

What do you call the genetic makeup of an organism?

• Phenotype

• Genotype

• Allele

• Chromosome

What is a gene?

• A piece of DNA on a chromosome that codes for a trait.

• A type of protein that helps in cell division.

• A segment of RNA that regulates gene expression.

• A structure that carries nutrients to cells.

What is the expected phenotypic ratio in a monohybrid cross?

• 1:1

• 2:1

• 3:1

• 4:0

What is the principle that states that alleles for different traits are distributed to gametes independently of one another?

• Law of Independent Assortment

• Law of Segregation

• Law of Dominance

• Law of Genetic Variation

What do you call two different genes for a trait, such as Bb?

• Homozygous

• Heterozygous

• Hemizygous

• Polygenic

What are alleles that are expressed in lowercase letters called?

• Dominant

• Recessive

• Codominant

• Incomplete Dominance

What is the term for the physical location of a gene on a chromosome?

• Locus

• Allele

• Chromatid

• Centromere

What is the term for an organism that has two identical alleles for a trait?

• Heterozygous

• Homozygous

• Polygenic

• Monogenic

What is the field of science that studies how traits are passed on, or inherited?

• Genetics

• Biology

• Chemistry

• Physics

What is the term for the observable characteristics of an organism?

• Genotype

• Phenotype

• Allele

• Chromosome