Vocabulary B5 Mendelian Genetics

This trait is represented by a lower case letter and hidden whenever the dominant allele is present

• dominant allele

• codominance

• recessive allele

• Punnett Square

This trait is represented by a capital letter and always shows up in an organism when the allele is present

• dominant allele

• codominance

• probability

• recessive allele

Which of the following is homozygous recessive?

• RR

• Rr

• rR

• rr

Which genotypes are heterozygous?

• EE

• tt

• Rr

• Both EE and tt

Which genotypes are homozygous dominant?

• EE

• tt

• Rr

• Both EE and tt

A ____ is a region of DNA that controls a trait.

• gene

• phenotype

• chromatin

• genotype

Alternative forms of a gene are called

• Alleles
• Homozygous
• DNA
• Genetics

The physical appearance of an organism based on traits

• Genotype
• Phenotype
• Meiosis
• Genetics

The allele combinations

• genetics
• mitosis
• genotype
• phenotype

This trait will always be expressed if present because it will mask the expression of others

• stem cells
• heterozygous
• dominant
• recessive