Genetics Concepts and Terminology

The video tutorial introduces key genetics vocabulary to help understand an assignment. It covers heredity, the transmission of genes, and the roles of DNA and karyotypes. The tutorial explains alleles, including dominant and recessive traits, and discusses genotype and phenotype. The video concludes with a summary of the key concepts.

What is the study of heredity known as?

• Botany

• Biology

• Genetics

• Ecology

What is DNA primarily responsible for?

• Transporting oxygen

• Providing energy to cells

• Digesting food

• Carrying the genetic code

What is a karyotype?

• An image of genes on chromosomes

• A genetic disorder

• A form of DNA

• A type of protein

What is an allele?

• A type of cell

• A form a gene can take

• A protein

• A chromosome

Which allele is expressed in heterozygotes?

• Recessive

• Neutral

• Dominant

• Silent

What does it mean if an organism is homozygous?

• It has different alleles for a trait

• It has only one allele

• It has the same alleles for a trait

• It has no alleles

What is the genotype of an organism?

• The diet

• The environment

• The combination of alleles

• The physical appearance

What does the phenotype of an organism refer to?

• Its genetic makeup

• Its visible characteristics

• Its habitat

• Its lifespan

Which genotype is considered homozygous dominant?

• Lowercase r, capital R

• Capital R, capital R

• Capital R, lowercase r

• Lowercase r, lowercase r

What is required for a recessive trait to be expressed?

• No alleles

• One dominant allele

• One recessive allele

• Two recessive alleles