Shared Flashcard Set

Details

Chapter Nine Vocabulary
Vocabulary for Chapter Nine "Intro to Genetics"
33
Biology
10th Grade
02/15/2010

Additional Biology Flashcards

 


 

Cards

Term
allele
Definition
one of the alt. forms of a gene that governs a charactistic
Term
anther
Definition
the tip of a stamen, which contains the pollen sacs where grain forms
Term
cross-pollination
Definition
a reproductive process in which pollen from one plant is transferred to the stigma in another plant
Term
dominant
Definition
allele that is fully expressed when carried by only one of a pair of homologous chromosomes
Term
F1 generation
Definition
the first generation of offspring from an experimental cross of two organisms
Term
F2 generation
Definition
the offspring from the F1 generation
Term
genetics
Definition
the science of heredity and of the mechanisms by which traits are passed from parent to offspring
Term
heredity
Definition
the passing of genetic traits from one offspring to the next
Term
law of independent assort.
Definition
the law that states that genes seperate independently from one another in meiosis
Term
law of segregation
Definition
the pairs of homologous chromosomes seperate in meiosis so only one chromosomes from each pair is present in each gamete
Term
molecular genetics
Definition
the study of the structure of neuleic acids and the function and regulation of genes
Term
P1 generations
Definition
parental generation, the first two individuals that mate in a genetic cross
Term
pollination
Definition
the transfer of pollen from the anthers to the pistil of a flower in angiosperms or the ovule in gynosperms
Term
pure
Definition
true-breeding flowers
Term
recessive
Definition
the one of a pair of alt. alleles whose effect is masked
Term
test cross
Definition
cross between a dominant phenotyped organism and an organism with a recessive phenotype
Term
self-pollination
Definition
transfer of pollen from an anther to a stigma of the same plant
Term
stigma
Definition
part of the pistil of a plant that recieves pollen
Term
strain
Definition
group of organisms of the same species, having distinctive characteristics but not usually considered a seperate breed
Term
trait
Definition
a genetically determined characteristic or condition
Term
codominance
Definition
of or relating to an equal degree of dominace of two genes, both being expressed in the phenotype
Term
complete dominace
Definition
when one gene totally masks the other gene of the phenotype
Term
dihybrid
Definition
the offspring of parents differing in two specific pairs of genes
Term
genotype
Definition
the genetic makeup of an organism or group of organisms with referance to a single trait, or more traits
Term
genotypic ratio
Definition
proportion of genotypes found in individuals after a cross
Term
heterozygous
Definition
having dissimilar pairs of genes for any hereditary characteristics
Term
homozygous
Definition
having identical pairs of genes for any given pair of hereditary characteristics
Term
incomplete dominace
Definition
a heterozygous condition in which both alleles at a gene locus are partially expressed
Term
monohybrid cross
Definition
the offspring of individuals that differ with respect to a particular gene type
Term
phenotype
Definition
the observable constitution of an organism
Term
phenotypic ratio
Definition
ration showing the varied outcomes that comes from a genetic cross
Term
probability
Definition
the likelyhood that a given event will occur
Term
punnett square
Definition
a diagram that is used to predict the outcome of a particular cross or breeding experiment
Supporting users have an ad free experience!