Reproduction/Genetics Review 15:1

A characteristic that an organism can pass on to its offspring through its genes is ___________

• Trait
• Gene
• Allele
• Dominant

An allele that is masked when a dominant allele is present. The "weaker" gene. 

• Dominant Allele
• Recessive Allele

An allele whose trait always shows up in the organism when the allele is present. The "stronger" gene. 

• Dominant Allele
• Recessive Allele

An organism’s genetic makeup or allele combination.

• Genotype
• Phenotype
• Beanotype
• Notype

An organism’s physical appearance, or visible traits. 

• Genotype
• Phenotype
• Beanotype
• Notype

What is called when a organism has  two different alleles for a trait. Tt or Rr

• Heterozygous
• Homozygous
• Domozygous
• Thermozygous

What is called when a organism has two identical alleles for a trait. TT or tt. RR or rr

• Heterozygous
• Homozygous
• Domozygous
• Thermozygous

Scientists use capital and small letters to show the _____ of an organism. 

• genotype
• genetic disorder
• phenotype
• genome

An organism that has one dominant and one recessive allele for height is _____.

• unusual
• homozygous
• mutated
• heterozygous

In a certain species of plant, the color purple (P) is dominant to the color white (p).
According to the Punnett Square, what is the probability of an offspring being purple?

• 25%
• 0%
• 100%
• 50%