genetics review

Multiple Choice

Heterozygous is when...

• the alleles are the same
• the alleles are different
• the alleles are absent
• the alleles are present

Multiple Choice

What is genetics?

• The study of cells.

• The study of life.

• The study of life.

• The study of heredity.

Multiple Choice

A person with blue eyes has a homozygous recessive genotype (bb).  What is the phenotype of this individual?

• Eye color

• Blue eyes

• bb

• Homozygous dominant

Multiple Choice

A common mutation in cats is polydactyly, the presence of extra toes. Cats with the dominant allele (P) have extra toes on the front feet. Cats with the genotype pp have the normal number of toes. What is the probability that he offspring of two cats, one with the normal number of toes and one that is heterozygous, will display polydactyly?

• 75%

• 50%

• 25%

• 100%

Multiple Choice

Who is the father of modern genetics?

• Charles Darwin

• Alfred Wallace

• Gregory Moneybanks

• Gregory Mendel

Multiple Choice

G = green, g = yellow
The genotype for a yellow plant is...

• GG
• Gg
• gg
• all of the choices result in yellow

Multiple Choice

Which of the following alleles is homozygous (purebred) recessive?

• Tt
• tt
• TT
• t

Multiple Choice

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

Multiple Choice

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

Multiple Choice

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

Multiple Choice

In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?

• rr
• R
• RR
• RR or Rr

Multiple Choice

What you see, or the physical appearance.

• Genotype
• Phenotype
• Homozygous
• Heterozygous

Multiple Choice

How many alleles (letters) do each person carry for a trait?

• 1
• 2
• 3
• 4

Multiple Choice

How many alleles (letters) does a child get from each parent for each trait?

• 1
• 2
• 3
• 4

Multiple Choice

Which of the following is a phenotype?

• Aa
• red hair
• heterozygous
• DNA

Multiple Choice

One form of a gene is called_______________

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

Multiple Choice

In this punnett square, which is the dominant trait?
The B stands for bud.

• purple flower bud
• white flower bud
• dominant
• recessive

Multiple Choice

W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?

• none
• 3/4
• 1/2
• all

Multiple Choice

The study of heredity and the variation of inherited characteristics 

• gene
• genetics 
• meiosis 
• hybrid 

Multiple Choice

A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?

• 25%
• 50%
• 75%
• 100%