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Science 3 / Ch. 10

Vocabulary

QuestionAnswer
Allele alternative forms of genes
dominant trait the trait that is observed
Heredity passing on characteristics from parent to off-spring
Genetics the study of heredity
Traits characteristics inherited
Gametes sex cells
Pollination transfer of pollen to the pistil
Fertilization male gamete in the pollen grain meets and fuses with the female gamete in the ovule
Hybrid off-spring of the parent that has different form of the same trait (short / tall)
Recessive trait that is not visible
Phenotype visible characteristics
Genotype genetic characteristics
Heterozygous if the two alleles for a trait differ from one another
Diloid a cell with two of each kind of chromosome (2n)
Haploid a cell with one of each kind of chromosome (n)
Homologous chromosomes paired chromosomes in a diploid cell
Meiosis cell division that produces a gamete containing half the number of chromosomes of its parent
Sexual Reproduction reproduction that involves the production and fusion of haploid cells
Crossing over exchange of genetic material between nonsister chromatids from homologous chromosomes during Prophase I of meiosis
Genetic recombination major sourse of genetic variation caused by reassortment or crossing over during meiosis
Nondisjunction failure of homologous chromosomes to separate properly during meiosis
Created by: TimZeller
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