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Genetics - Term 1

Allele 1 of 2 or more different genes that coode for similar proteins at the same locus on the chromosome
Asexual reproduction mitosis in the absence of gametes; the offspring are identical to the parent
Autosome any of the chromosomes other than the sex defending chromosomes
Chromosome linear thread of DNA found in the nucleus carrying the genetic code in the form of genes
Congenital devlop anomaly in which environ influences during the develop caused a mutation
Diploid # normal # of chromosomes for a particular species
Dominant an allele that is expressed in the phenotype even if the individual is heterzygous
Gene basic unit of heredity
Genotype genetic makeup of an individual
Haploid # half the normal # of chromosome; found in the gametes
heredity passing on of traits from parents to offspring
heterozygous possesing different alleles for a trait
homozygous possesing identical alleles for a trait
Hybrid offspring of distantly related or different species
incomplete dominance phenotypic blending of 2 alleles
Locus position on the chromosome where the alleles are located
Phenotype outward apperance of an individual
progeny offspring
Punnett square graph used to calc the % of offspring with particular genotypes
recessive allele that is not expressed in the phenotype unless the individual is homozygous
Sexual repro creation of offspring from gametes
Trait distinguishing charac of an individual
Mendel Gregor; monk
Somatic Cells body
Gametes haploid - sex cells, containg 1 chromosome of each type
BB Simple Dominance; homozygous
Bb Simple dominance; heterozygous
bb simple dominance; homozygous; recessive
Sex Linked X Y = Y does not contain all the same genes
Codominance both alleles appear equally in the phenotype
Lethal Genes A gene whose expression results in the death of the individual expressing it.
Incomplete Dominance Phenotype that is intermdiate between 2 alleles; Red X Y = Pink
RR x R'R' R = Red; R' = white 100% pink
Dihybrid Cross A cross between two individuals identically heterozygous at two loci for example, AaBb/AaBb.
complementary 2 genes that are only expressed when both are present
Epistatis (epi = above); one gene masks the express of a second gene at a seperate locus
Polygenic Inheritance traits that are created by the interation of multiple different genes
Line breeding mating w/in a certain faily and maintaing the relationship
Out-crossing unrelated animals (mutt)
Created by: wccvettech