Science vocabulary

Pistil

the female organs of a flower, comprising the stigma, style, and ovary.

Stamens

the male fertilizing organ of a flower, typically consisting of a pollen-containing anther and a filament.

Filial

of or due from a son or daughter.

Heredity pg 74

the passing on of physical or mental characteristics genetically from one generation to another.

Trait pg 74

a distinguishing quality or characteristic, typically one belonging to a person.

Genetics pg 75

the study of heredity and the variation of inherited characteristics

Fertilization pg 75

the action or process of fertilizing an egg, female animal, or plant, involving the fusion of male and female gametes to form a zygote.

Purebred pg 75

of an animal) bred from parents of the same breed or variety.

Gene pg 77

(in informal use) a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

Allele pg 77

one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.

Dominant allele pg 77

An allele that expresses its phenotypic effect even when heterozygous with a recessive allele; thus if A is dominant over a, then AA and Aa have the same phenotype.

Recessive allele pg 77

n an allele that produces its characteristic phenotype only when its paired allele is identical. Synonyms: recessive Type of: allele, allelomorph. (genetics) either of a pair (or series) of alternative forms of a gene that can occupy the same locus on a p

Hybrid pg 78

the offspring of two plants or animals of different species or varieties, such as a mule (a hybrid of a donkey and a horse).

Probability

the extent to which something is probable; the likelihood of something happening or being the case.

Phenotype

the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.

Genotype

the genetic constitution of an individual organism.

Homozygous

Alternative forms of a given gene are called alleles, and they can be dominant or recessive. When an individual has two of the same allele, whether dominant or recessive, they are homozygous.

Heterozygous

Heterozygous. A diploid organism is heterozygous at a gene locus when its cells contain two different alleles of a gene

Punnett square

The Punnett square is a diagram that is used to predict an outcome of a particular cross or breeding experiment.