Genetics Review

The letters that make-up the genetic code for a trait

• genotype
• heterzygous
• phenotype
• trait

----is the type of gene that always shows itself when present

• genotype
• homozygous
• phenotype
• dominant

Look at the Punnett Square. What's the probability of having the recessive offspring?

• 100%
• 75%
• 50%
• 25%

What is the phenotype for the recessive trait?

• brown eyes
• green eyes
• blue eyes

Tallness is dominant in pea plants and is represented by "T." What would the genotype be for a homozygous tall plant?

• Tt
• tt
• TT
• Tall 

Which sex chromosomes do females have?

• XX
• XY
• AB
• BA

Which sex chromosome do males have?

• XX
• XY
• AB
• BA

Is this trait dominant or recessive

• Dominant

• Recessive

When one allele is not dominant over another, resulting in a blended phenotype for heterozygous offspring is considered....

• Incomplete Dominance

• Codominance

When one allele is not dominant over the other, resulting in both traits expressed in a heterozygous individual.....

• Incomplete Dominance

• Codominance