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27 terms

Pearson Biology ch. 10

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trait
variation of a particular inherited character
genetics
study of heredity
cross-fertilization
process by which sperm from one flower's pollen fertilizes the eggs in a flower of a different plant
Hybrid
offspring of two different true-breeding varieties
monohybrid cross
mating of two organisms that differ in only one character
allele
alternative form of a gene
homozygous
having identical alleles for a gene E.x. blue eyd blue eyed
heterozygous
having different alleles for a gene
E.x. blue eyed and green eyed gene
dominant
the allele that shows up in the first generation
recessive
the allele that shows up in the second generation
Punnett Square
diagram showing the probabilities of the possible outcomes of a genetic cross calculated in a box set up
phenotype
type of genes you see
genotype
type of genes you have
testcross
mating of an individual of unknown genotype but dominant phenotype with a homozygous recessive individual
dihybrid cross
mating of two organisms that differ in two characters
intermediate inheritance
inheritance in which heterozygotes have a phenotype intermediate between the phenotypes of the two homozygotes
independent events
an event where the result of the first event effects the second (mulitply)
mutally exclusive
is an event where the result of the first event doesn't effect the second
locus
location of a chromosome where you find a given gene
incomplete dominance
not completely dominant over the recessive gene
codominance
two dominant gene (red times white = pink)
agglutinins
antibodies
sex-linked trait
a trait that is located on the x choromosome
polygenic inheritance
combined effect of two or more genes on a single character
chromosome theory of inheritance
generalization that genes are located on chromosomes and that the behavior of chromosomes during meiosis and fertilization accounts for inheritance patterns
gene linkage
tendency for alleles of genes on the same chromosome to be inherited together
sex-linked gene
gene located on a sex chromosome