Genetics Regular

Which of these is homozygous recessive?

• Rr
• rR
• RR
• rr

The different forms of a gene

• alleles

• atoms

• proteins

• wheels

An organism that has two identical (THE SAME) alleles for a trait (purebred)

• homozygous

• heterozygous

An organism that has two different alleles for a trait (hybrid)

• homozygous

• heterozygous

B = brown fur b = white fur

In the Punnett square, what is the probability for white fur?

• 0%

• 25%

• 50%

• 75%

Which sequence correctly represents the arrangement of structures containing genetic material, from smallest to largest in size?

• gene -> chromosome -> nucleus

• gene -> nucleus -> chromosome

• chromosome -> gene -> nucleus

• nucleus -> chromosome -> gene

Different forms of of the same gene are called....

• alleles

• chromosomes

• heterozygous

• genotype

A segment of DNA that codes for a trait is called a/an....

• gene

• chromosome

• allele

• phenotype

Which of the following represent and organism’s genotype?

• Gg

• G

• Red Hair

• Eye Color

In order to see a recessive trait in an organism’s phenotype, what must the organism’s genotype be?

• Homozygous Recessive

• Homozygous Dominant

• Heterozygous Dominant

• Heterozygous Recessive