Unit 6 Practice Test

What type of "square" helps us solve genetic problems?

• carpenter square
• Mendel square
• Punnett square
• genetic square

TT,tt,PP,pp,SS,ss are examples of alleles that are?

• homozygous
• heterozygous
• different
• homologous 

The exact genetic makeup of an organism, such as RR, Tt, PP is its?

• phenotype
• dominance
• genotype
• trait

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

"The Great White Shark was 20 feet in length.  Phenotype or Genotype?

• phenotype
• genotype

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

• tall
• short
• medium
• not enough info

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

• TT

• Tt

• tt

• ts

Alternant or different genes that code for the same trait are called?

• chromosomes

• segments

• alleles.

• homozygous.

On a punnett square, two capital letters indicate a gene which is

• Homozygous dominant

• Homozygous recessive

• Heterozygous

• None of the above.

On a punnet square, a capital letter and lowercase letter indicate a gene that is

• Homozygous Dominant

• Homozygous Recessive

• Heterozygous

• None of these