#1 Long Hair = Dominant (H) / Short Hair = Recessive (h). One cat carries heterozygous, long-haired traits (Hh), and its mate carries homozygous long-haired traits (HH). Use a Punnett square to determine the probability of one of their offspring having the genotype Hh.

• 25%
• 50%
• 75%

#2 Red Flower = Dominant (R) / White Flower = Recessive (r). One flower is heterozygous red (Rr) and it is crossed with a homozygous white (rr) flower. Use a Punnett square to determine the probability of one of their offspring having a red color.

• 25%
• 50%
• 100%

#3 Red Flower = Dominant (R) / White Flower = Recessive (r). One flower is heterozygous red (Rr) and it is crossed with a heterozygous red (Rr) flower. Use a Punnett square to determine the probability of one of their offspring having a white color.

• 100%
• 75%
• 25%

#4 Black = Dominant (B) / White = Recessive (b). If a homozygous black guinea pig (BB) is crossed with a homozygous white guinea pig (bb), what is the probability that an offspring will have black fur?

• 25%
• 75%
• 100%

#5 Scientists call an organism that has two different alleles for a trait (Tt) a ...

• heterozygous or hybrid
• purebred
• factor

#6 What does the allele notation TT mean to geneticists?

• two dominant alleles or pure homozygous
• two recessive alleles
• one dominant allele and one recessive allele

#7 What does the allele notation Tt mean to geneticists?

• two dominant alleles
• two recessive alleles
• one dominant allele and one recessive allele

#8 What does the allele notation ee mean to geneticists?

• two dominant alleles
• two recessive alleles
• at least one dominant allele

#9 An organism's PHYSICAL appearance is its ....

• genotype
• phenotype
• heterozygous

#10 An organism's genotype is its ...

• genetic makeup or alleles received
• feather color or how it shows up
• tall stem