Science Vocab Ch 9
Terms
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- probability
- likelihood for specific event
- allele
- 2 or more alternative forms of genes
- genotype
- organisms genetic makeup
- self pollination
- pollen transferred from anthers to stigma of flower or other flower in same plant
- homozygous
- both alleles alike
- law of segregation
- pair of factors is segregated or separated during formation of gametes
- p generation
- the true breeding parents
- dihybrid cross
- two characteristics are tracked
- genetics
- field of biology devoted to understanding how characteristics are transmitted from parents to offspring
- incomplete dominance
- phenotype of heterozygoute is intermediate between the phenotypes determined by dominant and recessive traits
- punnett square
- aids in predicting distribution of inherited traits to offspring
- molecular genetics
- study of structure and function of chromosome and genes
- f2 generation (second filial)
- plants from f1 generation
- trait
- genetically determined variant of a characteristic
- pollination
- pollen grains produced in male reproductive parts of a flower called anthers are transferred to female reproductive part of flower called stigma
- phenotype
- organisms appearance
- law of independent assortment
- factors separate independently during formation of gametes
- recessive
- trait expressed only when 2 recessive alleles for same characteristic are inherited
- cross pollination
- between flowers of two plants
- complete dominance
- one allele completely dominates over another
- codominance
- when both alleles for gene expressed in heterozygous offspring
- true breeding
- pure traits
- dominant
- masks or dominates factor for other trait in pair
- heredity
- transmission of characteristics from parents to offspring
- f1 generation (first filial)
- offspring of p generation
- genotypic ratio
- ratio of genotypes that appear in offspring
- monohybrid cross
- one characteristic is tracked
- testcross
- individual of unknown genotype is crossed with a homozygous recessive individual
- phenotypic ratio
- ratio of offspring's phenotypes