the transmission of characteristics from parents to offspring
a genetically determined variant of a characteristic
the scientist who performed tests on pea plants and discovered dominant and recessive traits
occurs when pollen grains from the anthers are transferred to the stigma
the male reproductive parts of a flower
the female reproductive parts of a flower
when pollination occurs between the stigma and anthers of the same flower or plant
when pollination occurs between the stigma and anthers of different plants and flowers
pure - always produce offspring with their traits when they self pollinate
the offspring of the P generation - all purple pea pod flowers
the offspring of the F1 generation - 3:1 ratio of purple to white
a trait that masks the factor for the other trait in a pair
a trait that is masked by the other trait in a pair
Law of Segregation
states that a pair of factors is separated during the formation of gametes
Law of Independent Assortment
states that factors separate independently from one another during the formation of gametes
the study of the structure and function of chromosomes and genes
two or more alternative forms of a gene
the genetic appearance of an organism
the physical appearance of an organism
both alleles of a trait are alike - ex. RR
the alleles of a trait are different - ex. Rr
the likelihood that a specific event will occur
a cross where only one characteristic is tracked
a diagram that aids in the tracking of distribution of traits to offspring
the ratio of the genotypes that appear in offspring - ex. 1 BB : 2 Bb : 1 bb
the ratio of the offspring's phenotypes - ex. 3 black : 1 brown
a test which determines a genotype of an unknown parent with one that is homozygous recessive (rr)
occurs when one allele is completely dominant over the other trait - ex. PP and Pp both express the same trait because P is dominant over p
occurs when the phenotype of a heterozygote is intermediate between dominant and recessive - ex. A flower with the genotype RR is red and a flower with the genotype rr is white. A flower with the genotype Rr is pink.
occurs when both alleles for a gene are expressed in a heterozygous offspring - ex. A boy with the genotype BB has brown eyes. A boy with the genotype bb has green eyes. A boy with the genotype Bb has brown and green speckled eyes.
a cross in which two characteristics are tracked in a punnett square
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