Intro to genetics

What are gametes?

• Units of hereditary material

• Structures that store DNA

• Reproductive cells

• Proteins in the nucleus

What is the role of a gene?

• To package DNA into chromosomes

• To determine the number of chromosomes

• To create proteins in the cell

• To code for a specific trait

What is an allele?

• A dominant trait

• A version of a gene

• A recessive gene

• A type of chromosome

What does it mean if an organism is heterozygous for a trait?

• It has only recessive alleles

• It has two different alleles

• It has two identical alleles

• It has no alleles

What is the difference between haploid and diploid cells?

• Haploid cells have two sets of chromosomes, diploid have one

• Haploid cells are found in the nucleus, diploid are not

• Haploid cells have one set of chromosomes, diploid have two

• Haploid cells are larger than diploid cells