Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
|
transmission of genetic traits from parent to offspring
|
Heredity
|
|
|
study of heredity
|
genetics
|
|
|
cross involving one pair of contrasting traits
|
monohybrid cross
|
|
|
displaying only one form of a particular trait in offspring
|
true-breeding
|
|
|
the first two individuals that mate in a genetic cross
|
P generation
|
|
|
the first offspring from a cross of two varieties in the parental(P) generation
|
F1 generation
|
|
|
the offspring from crosses among individuals of the F1 generation
|
F2 generation
|
|
|
an alternative form of gene
|
allele
|
|
|
genetic trait that is expressed when its allele is homozygous or heterozygous
|
dominant
|
|
|
genetic trait that is not expressed when the contrasting form of the trait is present
|
recessive
|
|
|
refers to an individual with two identical alleles for a trait
|
homozygous
|
|
|
refers to an individual with two different alleles for a trait
|
heterozygous
|
|
|
the genetic makeup of an organism as indicated by its set of alleles
|
genotype
|
|
|
observable characteristics in an organism
|
phenotype
|
|
|
first law of heredity stating that pairs of alleles for a trait separate when gametes are formed
|
law of segregation
|
|
|
second law of heredity stating that pairs of genes separate independently of one another in meiosis
|
law of independent assortment
|
|
|
diagram used by biologists to predict the probably outcome of a genetic cross
|
Punnett square
|
|
|
a genetic crossof an individual whose phenotype is dominant but whose genotype is unknown, with a homozygous recessive individual
|
test cross
|
|
|
the likelihood that a specific event will occur
|
probability
|
|
|
family history that shows how a trait is inherited over several generations
|
pedigree
|
|
|
a trait tha tis determined by a gene found on the X chromosome
|
sex-linked trait
|
|
|
characteristic of an organism that is influenced by several genes
|
polygenic trait
|
|
|
condition in wihch a trait in an individual is intermediate between the phenotype of its two parents
|
incomplete dominance
|
|
|
condition in which both alleles for a gene are expressed when present
|
codominance
|
|
|
the existence of more than two alleles for a genetic trait
|
multiple alleles
|
