Genetics Flashcards
(17 cards)
Trait
The characteristic that an organism can pass on to its offspring through genes
Heredity
The passing of physical characteristics from parents to offspring
Genetics
The scientific study of heredity
Fertilization
When egg and sperm cell join to form a new organism
Purebred
The offspring of many generations that have the same trait
Gene
The factors that control a trait
Alleles
Different forms of a gene
Dominant allele
One whose trait always shows up in the organism when the allele is present
Recessive allele
Hidden whenever the dominant allele is present
Hybrid
An organism that has two different alleles for a trait.
Probability
To predict results of a particular event
Punnett square
A chart that shows all the possible combinations of alleles that can result from a genetic cross
Phenotype
An organisms physical appearance or visible traits
Genotype
An organisms genetic make up or allele combinations
Homozygous
An organism that has two identical alleles for trait
Heterozygous
An organism that has two different alleles for a trait
Codominance
The alleles are neither dominant nor recessive. Both alleles are expressed in offspring
