Basic Terms
The passing of characteristics from parents to offspring.
What is heredity?
The first scientist to begin studying heritability and genetics.
Who is Gregor Mendel?
When an individual has two different alleles.
What is heterozygous (hybrid)?
The characteristics of an individual that you can see.
What is a phenotype?
Humans have this many chromosomes in each cell.
This occurs when egg and sperm join to make offspring.
What is fertilization?
What did Gregor Mendel cross-pollinate in his genetics experiments?
What are pea plants?
When an individual has the same alleles.
What is homozygous (pure-bred)?
The most common eye color in humans.
What is brown?
Humans have this many pairs of chromosomes in each cell.
What is 23?
The basic units of heredity.
What are genes?
What species of animal was first successfully cloned?
What is a sheep?
One allele is stronger than another and will show up in a trait.
What is dominant?
The most common color of hair in humans.
What is brown?
Percentage of genes that are similar in every human being.
What is 99.9%
The study of heredity.
What is genetics?
The two people that discovered the structure of the DNA molecule.
Who are James Watson and Francis Crick?
One allele is weaker than the other and will be masked.
The chemical that determines the color (pigment) of human skin cells.
Percentage of genes that human share in common with apes.
What is 98%
Different versions of a gene.
What is an alleles?
The process of being able to switch bad genes with good genes?
What is gene therapy?
What is a genotype?
What is the natural color of a flamingo's feathers?
What is white?
Percentage of genes that human share with mice.
What is 90%