Genetics

What is the study of genes and inheritance known as?

• Genetics

• Chemistry

• Physics

• Astronomy

An organism's observable physical features are also called what?

• Genotype

• Phenotype

Check any/all phenotypes described below

• Tall

• Green eyes

• Hh

• Spotted fur

• bb

An organism's genetic code is also called what?

• Genotype

• Phenotype

You inherit a recessive allele from your mother and a dominant allele from your father. Which allele will be expressed?

• The recessive allele

• The dominant allele

Attached earlobes are a recessive trait. If you receive a DOMINANT allele from each of your parents, what kind of earlobes will you have?

• Attached earlobes

• Detached (free) earlobes

A cleft chin is a dominant trait. If you receive a RECESSIVE allele from each of your parents, what type of chin will you have?

• Cleft chin

• Smooth chin

What does heterozygous mean?

• An organism that has the same genes for a trait (TT or tt)
• An organism that has different genes for a trait (Tt)
• When neither gene is fully dominant; offspring is a mixture of both
• the different forms of a trait (hair color--> brown, blonde, red

If a heterozygous tall pea plant is crossed with a short pea plant, what are the possible genotypes of the future offspring?

• 100% Tt
• 50% Tt, 50% tt
• 75%Tt, 25%tt
• 25%TT, 50%Tt, 25%tt

What does a filled in square represent?

• Not affected Female
• Not affected Male
• Affected Male
• Affected Female