Vocabulary
This branch of biology studies heredity, genes, and genetic variation.
What is genetics?
This person is considered the "father" of genetics.
Who is Gregor Mendel?
A trait that only appears when two recessive alleles are present is called this.
What is a recessive trait?
A child has dimples, and many people in their family across several generations also have dimples.
What is heritable?
This is a segment of DNA that contains information about a trait.
What is a gene?
This law states that dominant alleles mask recessive alleles in the phenotype.
What is the Law of Dominance?
Color blindness is a trait on this chromosome.
What is the X chromosome?
A set of twins both have genes associated with obesity, but only one develops obesity because of diet and activity level.
What is both?
This term describes different versions of the same gene.
What is an allele?
In a monohybrid cross between Gg × Gg, this percentage of offspring would show the recessive trait.
What is 25%?
Snapdragon flower color is an example of this inheritance pattern where neither allele is completely dominant.
What is incomplete dominance?
A man begins losing his hair in his 30s, and many men on both sides of his family also experienced baldness.
What is heritable?
This is the observable characteristic of an organism.
What is phenotype?
A cross involving two different traits is called this.
What is a dihybrid cross?
Human blood type AB demonstrates this genetic pattern.
What is codominance?
A person develops stronger reading skills after years of practice and education.
What is environment?
An organism with two different alleles for a trait is described as this.
What is heterozygous?
In a BbEe × BbEe cross, this phenotypic ratio is expected.
What is 9:3:3:1?
The curly-wing allele in Drosophila is an example of this type of allele because homozygous offspring die.
What is a lethal allele?
A person develops larger muscles after years of weight training and exercise.
What is environment?