Quizizz Genetics Exam Practice Set

Genotype refers to the ...

• physical expression of the genes
• the possible combination of alleles in a gene
• whether an allele is dominant or recessive
• how an organism will appear

Which of the following is a phenotype?

• BB
• Bb
• bb
• Blue eyes

having two of the same genes for the trait (sometimes called purebred).

• homozygous
• hetrozygous
• protein
• chromosome

An allele whose trait only shows up when no dominant allele is present.

• hidden allele
• dominant allele
• recessive allele
• present allele

Snapdragon flowers come in red, pink and white.  What type of inheritance is this?

• Complete Dominance
• Incomplete Dominance
• Codominance
• Polygenic Inheritance

Incomplete dominance means that the traits are

• expressed equally
• dominant
• recessive
• blended

One form of a gene is called_______________

• a DNA
• a Phenotype
• a trait
• an allele

Tt is-

• homozygous dominant
• homozygous recessive
• heterozygous
• none of these

The genotype of an organism describes the

• codons that make up the genes
• number of gene's on the chromosmes
• genetic make-up of a trait
• type of chromosomes in the nucleus

When you cross two parents, each parent is responsible for passing _______ of their two alleles for each individual trait.

• 1

• 2

• 3

• 4