Punnett Square

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

Punnett squares can be used to predict the probability of:

• being exposed to a contagious disease and contracting it
• having an inherited disease or a genetically determined physical trait
• Both

A factor that covers up another factor is _____

• Recessive
• Obsessive
• Dominant
• Combinant

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%