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Chapters 11 & 14.1
Vocab.
31
Biology
10th Grade
01/19/2012

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Term
genetics
Definition
the science of heredity, dealing with resemblances and differences of related organisms resulting from the interaction of their genes and the environment.
Term
trait
Definition
a distinguishing characteristic or quality, especially of one's personal nature: bad traits of character.
Term
P generation
Definition
The parent individuals from which offspring are derived in studies of inheritance; P stands for "parental.".
Term
dominant
Definition
Most important, powerful, or influential: "they are now in an even more dominant position in the market".
Term
allele
Definition
One of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
Term
segregation
Definition
the formation of unique gametes from the genotype of the parents
Term
gamete
Definition
A mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote.
Term
genotype
Definition
The genetic constitution of an individual organism.
Term
homozygous
Definition
having identical alleles at corresponding chromosomal loci; "these two fruit flies are homozygous for red eye color".
Term
pure-bred
Definition
A true breeding organism, sometimes also called a pure-bred, is an organism having certain biological traits which are passed on to all...
Term
monohybrid cross
Definition
hybridization using a single trait with two alleles (as in Mendel's experiments with garden peas
Term
incomplete dominance
Definition
Dominance in genetics is a non-linear relationship between different forms (alleles) of a gene and the resultant phenotype.
Term
dihybrid cross
Definition
A hybrid that is heterozygous for alleles of two different genes.
Term
pedigree
Definition
The record of descent of an animal, showing it to be purebred
Term
polygenic trait
Definition
Quantitative genetics is the study of continuous traits (such as height or weight) and their underlying mechanisms
Term
genome
Definition
1.The haploid set of chromosomes of an organism.
2.The complete set of genetic material of an organism.
Term
heredity
Definition
1.The passing on of physical or mental characteristics genetically from one generation to another
Term
cross-pollinate
Definition
pollinate: fertilize by transfering pollen
Term
F1 generation
Definition
F1 hybrid is a term used in genetics and selective breeding. F1 stands for Filial 1, the first filial generation seeds/plants or animal...
Term
recessive
Definition
Relating to or denoting heritable characteristics controlled by genes that are expressed in offspring only when inherited from both...
Term
gene
Definition
A unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the...: "proteins coded directly by genes"
Term
law of independent assortment
Definition
each member of a pair of homologous chromosomes separates independently of the members of other pairs so the results are random.
Term
phenotype
Definition
The set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.
Term
heterozygous
Definition
having dissimilar alleles at corresponding chromosomal loci; "heterozygous for eye color".
Term
hybrid
Definition
A thing made by combining two different elements; a mixture.
Term
punnett square
Definition
The Punnett square is a diagram that is used to predict an outcome of a particular cross or breeding experiment
Term
codominance
Definition
Dominance in genetics is a non-linear relationship between different forms (alleles) of a gene and the resultant phenotype
Term
sex linked trait
Definition
Sex linkage is the phenotypic expression of an allele related to the chromosomal sex of the individual.
Term
carrier
Definition
1.A person or thing that carries, holds, or conveys something
Term
multiple allele
Definition
one of two or more forms of the DNA sequence of a particular gene.
Term
karotype
Definition
The number and visual appearance of the chromosomes in the cell nuclei of an organism or species.
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