Genetics Vocabulary Challenge: Traits, Alleles, and Inheritance

The video tutorial introduces key vocabulary related to genetics, including the concepts of genes, alleles, genotype, and phenotype. It explains how traits are inherited through dominant and recessive alleles, using eye color as an example. The tutorial also covers the terms homozygous and heterozygous, providing a comprehensive overview of basic genetic principles.

What is the study of how traits are passed from one generation to the next called?

• Anatomy

• Ecology

• Biology

• Genetics

Which of the following is a segment of DNA that determines a trait?

• Chromosome

• Gene

• Enzyme

• Protein

What term describes a different version of a gene?

• Allele

• Chromosome

• Genotype

• Phenotype

Which of the following represents a person's observable characteristics?

• Chromosome

• Allele

• Phenotype

• Genotype

What type of allele is always expressed if present?

• Recessive

• Heterozygous

• Dominant

• Homozygous

If a person has one dominant allele and one recessive allele for a trait, what will their phenotype be?

• Heterozygous

• Dominant

• Recessive

• Homozygous

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

• It has no alleles for a trait.

• It has one dominant and one recessive allele.

• It has two identical alleles for a trait.

• It has two different alleles for a trait.

Which term describes an organism with two different alleles for a trait?

• Homozygous

• Heterozygous

• Dominant

• Recessive

In genetic notation, which letter is typically used to represent a dominant allele?

• Lowercase letter

• Number

• Uppercase letter

• Greek letter

When choosing letters to represent alleles, which allele is usually represented by the chosen letter?

• Heterozygous

• Homozygous

• Dominant

• Recessive