Basic Genetics Quiz

How many alleles does an individual inherit for each gene?

• 1

• 2

• 3

• 4

T/F

Genotype is the physical appearance of a trait

• True

• False

Homozygous means....

• Having two identical alleles

• Having two different alleles

Dominant is shown by...

• Lowercase letters

• Capital letters

T2 - The Law of Segregation explains why, if you start with 46 choromosomes, Meiosis produces cells with how many chromosomes?

• 44
• 22
• 46
• 23

T2 - Recessive alleles may not be expressed because they are

• masked by the dominant allele
• the least common allele in the population
• the most common allele in the population
• less likely to having crossing over

T3 - Which of the following genotypes is homozygous recessive?

• Tt
• tt
• TT
• T

T3 - What does heterozygous mean?

• An organism that has the same alleles for a trait (TT or tt)
• An organism that has different alleles for a trait (Tt)
• When neither allele is fully dominant; offspring is a mixture of both
• the different forms of a trait (hair color--> brown, blonde, red

T3 - What is a phenotype?

• The expression of a trait; physical appearance.
• refers to the genetic makeup of an individual
• An organism that has the same genes for a trait (ex. TT or tt)
• the passing of traits from parent to offspring

Who is considered to be the Father of genetics?

• Mendel
• Watson & Crick
• Flemming
• Darwin