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Biology Chapter 9 Vocab Review
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The alleles of a particular gene are different
heterozygous
the two alleles for a trait separate when gametes are formed
law of segregation
the alleles of different genes separate independently of one another during gamete formation
law of independent assortment
not expressed when the dominant form of the trait is present
recessive
passing of traits from parents to offspring
heredity
all the offspring display only one form of a particular trait
true-breeding
factor that masks another form of a trait
dominant
first two individuals crossed in a breeding experiment
P generation
physical apperance of an organism
phenotype
a cross that considers one pair of contrasting traits
monohybrid
offspring of the F1 generation
F2 generation
when the two allels of a particular gene are the same
homozygous
branch of biology that studies heredity
genetics
different versions of a gene
alleles
offspring of the P generation
F1 generation
set of allels that an individual has
genotype
a cross that considers two pairs of contrasting traits
dihybrid cross
genetically determined variant of a characteristic
trait
diagram that predicts the outcomes of a genetic cross
Pennett square
cross of a homozygous recessive individual with an individual with a dmoninant phenotype of unknown genotype
test cross
the likelihood that a specific event will occur
probability
fraction of genotypes that appear in offspring
genotypic ratio
when heterozygous plants and homozygous dominant plants have the same phenotype
complete dominance
when pollen is transferred to a stigma from the smae plant
self-pollination
when an individual displays a trait that is intermediat between the two parents
Incomplete dominance
when both alleles for a trait are expressed in a heterozygous individual
Codominance
fraction of phenotypes that appear in offspring
phenotypic ratio
occurs between flowers of two different plants
cross-pollination
study of the structure and function of chromosomes and genes
molecular genetics
when pollen grains are transferred to the stigma
pollination
Author
norwin102
ID
71934
Card Set
Biology Chapter 9 Vocab Review
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Biology Chapter 9 Vocab Review
Updated
2011-03-10T01:11:59Z
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