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Biology Ch. 9

Vocabulary section 1

QuestionAnswer
The science of heredity and of the mechanisms by which traits are passed from parents to offspring. genetics
The passing of genetic traits from parent to offspring. heredity
The transfer of pollen from the male reproductive structures (the anthers) to the tip of a female reproductive structure (the pistil) of a flower in angiosperms or to the ovule in gymnosperms. pollination
The transfer of pollen grains from an anther to the stigma of the same flower or to the stigma of another flower on the same plant. self-pollination
A reproductive process in which pollen from one plant is transferred to the stigma of another plant. cross-pollination
Describes organisms or genotypes that are homozygous for a specific trait and thus always produce offspring that have the same phenotype for that trait. true-breeding
Parental generation, the first two individuals that mate in a genetic cross. p-generation
The first generation of offspring obtained from an experimental cross of two organisms. f1 generation
The second generation of offspring, obtained from an experimental cross of two organisms; of the F1 generation. f2 generation
Describes the allele that is fully expressed when carried by only one of a pair of homologous chromosomes. dominate
describes a trait or an allele that is expressed only when two recessive alleles for the same characteristic are inherited. recessive
The study of the structure of nucleic acids and the function and regulation of genes. molecular genetics
One of the alternative forms of a characteristic, such as hair color. allele
Created by: alenaisrawwr
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