allele
a member of a gene pair that determines a specific trait
Mendel
Father of Genetics
hybrid
genes that are different for a trait, such as Tt
genotype
the actual makeup of an organism
traits
the physical characteristics of an organism that are passed down from one generation to the next
incomplete dominance
a condition in which neither of the two genes in a gene pair masks the other
chromosomes
rod-shaped structures found in the nucleus of every cell in an organism
phenotype
the physical appearance of a trait
homozygous
a gene pair that consists of two dominant alleles or two recessive alleles
law of segregation
one gene from each gene pair goes to each sex cell
genes
the traits of an organism are controlled by its...
punnett square
a table showing all possible combinations of alleles for a trait resulting from a genetic cross
heterozygous
a gene pair that consists of a dominant allele and a recessive allele
first filial
first generation of offspring
recessive
a trait that seems to disappear when two different genes for the same trait dominant
genetics
The scientific study of heredity
law of assortment
each gene pair is inherited independently of the gene pairs for other traits
heredity
passing of traits from parents to offspring
genetic variation
the number and frequency of alleles that are present in a particular population
complete dominance
a relationship in which one allele is completely dominant over another