Vocabulary for Exploring Creation With Biology

Allele (uh leel') - One of a pair of genes that occupies the same position on homologous chromosomes (242)
Autosomal inheritance - Inheritance of a genetic trait not on a sex chromosome (260)
Autosomes - Chromosomes that do not determine the sex of an individual (257)
Change in chromosome number - A situation in which abnormal cellular events in meiosis lead to either none of a particular chromosome in the gamete or more than one chromosome in the gamete (270)
Change in chromosome structure - A situation in which the chromosome loses or gains genes during meiosis (262)
Dihybrid cross - A cross between two individuals concentrating on two definable traits (251)
Dominant allele - An allele that will determine phenotype if even one is present in the genotype (243)
Genetic disease carrier - A person who is heterozygous in a recessive genetic disorder (261)
Genotype (jee' nuh tipe) - Two-letter set that represents the alleles an organism possesses for a certain trait (242)
Heterozygous (het uh roh zy' gus) genotype - A genotype with two different alleles (243)
Homozygous (ho muh zy' gus) genotype - A genotype in which both alleles are identical (243)
Monohybrid cross - A cross between two individuals concentrating on only one definable trait (251)
Mutation - A radical chemical change in one or more alleles (261)
Pedigree - A diagram that follows a particular species' phenotype through several generations (248)
Phenotype (fee' nuh tipe) - The observable expression of an organism's genes (243)
Recessive allele - An allele that will not determine the phenotype unless the genotype is hornozygous with that allele (243)
Sex chromosomes - Chromosomes that determine the sex of an individual (257)
Sex-linked inheritance - Inheritance of a genetic trait located on the sex chromosomes (261)
True breeding - If an organism has a certain characteristic that is always passed on to all of its offspring, we say that this organism bred true with respect to that characteristic. (236)

Vocabulary posted with permission from Dr. Jay L. Wile.
This vocabulary is from the homeschool curriculum, Exploring Creation with Biology by By Dr. Jay L. Wile and Marilyn F. Durnell