Genetics Vocabulary
This term means different alleles for the same gene.
Heterozygous
A physical characteristic like eye color or dimples.
Trait
This type of allele always shows, if present.
Dominant
An organism with genotype TT is described as this.
Homozygous dominant
If B= brown eyes, and b= blue eyes, these genotypes show brown eyes.
BB or Bb
This word describes having two identical alleles.
Homozygous
Where you get your traits.
Parents
A dominant allele is written using this type of letter.
Capital
An organism with a genotype of Tt is described using this term.
Heterozygous dominant
Which genotype shows a recessive trait?
bb
A chart used to predict offspring traits.
Punnett Square
These determine if a trait is passed on.
Genes
This allele is hidden, and must be present in all genes to be shown.
Recessive
This two-letter combination represents an organism's genes for a trait.
Genotype
Two organisms have the same phenotype, but different genotypes. What are those genotypes?
BB, Bb
The passing of traits from parents to offspring.
Heredity
These are traits you are born with, they are not learned.
Inherited traits
A recessive allele is written using this kind of letter.
Lower case
The physical appearance that results from a genotype.
Phenotype
A heterozygous parent passed on which allele 50% of the time?
Either one
Different forms of the same gene.
Alleles
This trait can be influenced by both genes and environment.
Height, athletic ability, etc
If a person is heterozygous, this trait is present.
Dominant
Two different words that describe how traits are passed from parents to offspring.
Heredity and genes
Explain why two brown-eyed parents could have a blue-eyed child.
Both could carry a recessive allele