GENETICS

Heterozygous is when...

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

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

• Tt
• tt
• TT
• t

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

What you see, or the physical appearance.

• Genotype
• Phenotype
• Homozygous
• Heterozygous

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

• 1
• 2
• 3
• 4

Y for yellow body is dominant over y for blue body.  What alleles would produce yellow bodies?

• YY,yy
• Yy,yy
• YY only
• YY,Yy

If "T" is the allele for tall and "t" is the allele for short, then Tt would produce?

• tall
• short
• medium
• not enough info

What plant did Mendel study?

• pea plant

• spinach

• carrots

• sunflowers