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33 Cards in this Set

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  • Back
allele
an alternate form of a gene
anther
the microsporagium of an angiowperm in which pollen grains are produced
codominance
an inheritance relationship in which neither of the two alleles of the same gene totally masks the other
complete dominance
an inheritance relationship in which one allele is coninant over the other; both Bb and BB have the same phenotype
cross-polination
a reproductive process in which pollen from one pland is transfered to the stigma of another plant
dominant
referring to an allele that masks the presence of another allele for the same characteristic
dyhybrid cross
a cross between individuals that involves the pairing of contrasting traits
F1 generation
the offspring of a cross-polinated P1 generation of plants
F2 generation
the offspring of self-polinated F1 generation of plants
genotype
the genetic maieup of an organism
genetics
understanding how traits are passed from parent to offspring
genotypic ratio
the probable ratio of genotypes produced by a cross
heredity
the transmisssion of traits from parents fo their offspring
hetero zugous
refering to a gene pair in which the two alleles do not code for the same trait
homolozygous
refering to a gene pair in which two alleles code for the samt trait
incomplete dominance
an inheritance relationship that occurs when both alleles influence the phenotype
law of independent assortment
law stating that pairs of genes separate independently in meiosis
law of segregation
pairs of genes separate in meiosis and each gamete recieves one gene of a pair
molecular genetics
the study of the structure and function of chromosomes and genes
monohybrid cross
a cross between individuals that involves one pair of contrasting traits
P1 generation
a strain obtained through self-polination
phenotype
the external appearance of an organism that is determined by the individuals _______....um i didnt finish this one...so tell me what goes here.
pheontypical ratio
the number of times a specific phenotype occurs in a population in a single generation
pollination
the transfer of pollen from another to a stigma of a flowerof the same species
probability
the number of times an event is expected to happen divided by the number of oppurtunities for an event to happen
punnet square
a model used to establish the probabilities of the results of a genetic cross
pure
ability to always pass on a specific trait to offspring
recessive
reffering to an allele that is masked by the presenve ot another allel for the same characteristics
self-pollination
pollination involving the same flowers on the same plant, or two genetically identical plants
stigma
an expanded apex of a postil, supported by the style, the part of the pistil that recieves pollen
strain
denotes a plant that is pure for acertion trait
test cross
the crossing of an individuals of unknown genotype with a homologous recessive individual to determine the unknown genotype
trait
in genetics, a category within which alternate characteristics, such as height and eye color, can be observed