Genetics Revision

Which of the following are NOT base pairs found in DNA?

• Adenine

• Uracil

• Cytosine

• Guanine

• Thymine

Which of the following are NOT base pairs found in RNA?

• Adenine

• Uracil

• Cytosine

• Guanine

• Thymine

The letter "A" represents the allele for red apples and the letter "a" represents the allele for green apples. Which of the following is true? There may be more than one correct answer.

• The allele for red apples is dominant

• The allele for green apples is dominant

• The allele for red apples is recessive

• The allele for green apples is recessive

The letter "A" represents the allele for red apples and the letter "a" represents the allele for green apples. Which of the following represents the genotype for a homozygous red apple?

• Aa

• AA

• aa

The letter "A" represents the allele for red apples and the letter "a" represents the allele for green apples. Which of the following represents the genotype for a homozygous green apple?

• Aa

• AA

• aa

The letter "A" represents the allele for red apples and the letter "a" represents the allele for green apples. Which of the punnet squares will show the outcome of of a cross between a heterozygous red apple tree and a homozygous green apple tree?

Which of the following are phenotypes for the father? There may be more than one.

• Short Tail

• Black fur

• Pointy ears

• Three eyes

• Webbed Digits

Which of the following is NOT a phenotype for the mother?

• Fat Body

• Long Tail

• Round ears

• Black fur

• Three eyes

What is the relationship between genotypes and phenotypes

• Genotypes and phenotypes are different names for what genes someone has.

• Genotypes are the genes that someone has. Phenotypes are the characteristics you can see.

• Phenotypes are the genes that someone has. Genotypes are the characteristics you can see.

• Genotypes and phenotypes are different names for what characteristics someone has.

In a species of pea plants the allele for green pods (G) is dominant to that for yellow pods (g). Complete the punnet square and determine the probability (as percentage) that the genotype of the crossed plant will be Gg if a heterozygous green pod is crossed with a homozygous yellow pod?