Transcript
Q: Passing of genes from parents to offspring
A: Heredity
Q: Thin strands of DNA in the cell nucleus that carry the genetic
code.
A: Chromosomes
Q: Where hereditary information is found in the body.
Units of DNA.
A: Genes
Q: Inheritable characteristics of parents.
(Hair and eye color, height, blood type, musical ability)
A: Traits
Q: Stronger trait that will show up in offspring.
A: Dominant Trait
Q: Weaker trait that won’t show up but doesn’t go away.
May appear in later pairings.
A: Recessive Trait
Q: A different form a gene may have for a trait (Ex: R or r)
A: Alleles
Q: The genetic make-up of an organism for a trait.
A: Genotype
Q: A physical trait (eye color, hair color) that shows up as a
result of an organism’s particular genotype.
A: Phenotype
Q: The form of a trait that is the most common in a population
because only one allele is needed for it to show.
Ex: R in Rr
A: Dominant
Q: The form of a trait that tends to disappear in a population
because to show up, two alleles of this are needed.
Ex: r in r r
A: Recessive
Q: An organism that has two identical alleles for a trait.
Ex: R R
A: Homozygous
Q: An organism that has two different alleles for a trait.
Ex: R r
A: Heterozygous
Q: Diagram that shows the probability of an offspring showing a particular trait.
A: Punnett Square
Q: Charts showing hereditary traits in family members
A: Pedigrees
Q: Methods used by scientists to change an organism’s DNA.
A: Genetic Engineering
Q: Scientist who first described how traits are passed from generation to generation.
A: Gregor Mendel
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