Genetics Concepts and Terminology

The video tutorial explains the concepts of genes and alleles, highlighting how genes are made up of DNA and control specific traits. It discusses the variations of alleles, including dominant and recessive types, and how these affect inheritance. The video also covers the differences between homozygous and heterozygous alleles, and the relationship between genotype and phenotype. An activity is included to reinforce learning, followed by a conclusion encouraging further exploration.

What is a gene made up of?

• Proteins

• Lipids

• DNA

• RNA

Which of the following is an example of an allele?

• Blue eyes

• Blood type

• Eye color

• Skin color

How is a dominant allele represented?

• By a small letter

• By a capital letter

• By a number

• By a symbol

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

• They have one allele

• They have two different alleles

• They have two identical alleles

• They have no alleles

Which genotype represents a heterozygous condition?

• Aa

• aa

• BB

• AA

What is the observable expression of a trait called?

• Genotype

• Gene

• Phenotype

• Allele

If a genotype is 'Tt', what is the phenotype if 'T' is dominant?

• Medium

• Tall

• Short

• Unknown

In the activity, what does 'big R and small W' represent?

• Homozygous recessive

• Not a valid genotype

• Heterozygous

• Homozygous dominant

What is the phenotype for the genotype 'small w and small w'?

• Pink

• Red

• White

• Blue

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