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Genetics

Review for unit test

TermDefinition
heredity the passing of traits from parents to offspring
allele the different forms a gene may have for a trait
genetics the study of how traits are inherited
dominant form of a trait that appears to mask another form of the same trait
recessive form of a trait that seems to disappear in a population, but can reappear
Punnett square tool used to predict results in Mendelian genetics
genotype genetic makeup of an organism
homozygous organism with two identical alleles for a trait
heterozygous organism with two different alleles for a trait
phenotype physical trait that shows as a result of a particular genotype
incomplete dominance production of a phenotype that is intermediate to those of the two homozygous parents
Gregor Mendel Austrian monk father of genetics
sex-linked gene an allele inherited on a sex chromosome
genetic engineering methods for changing the DNA sequence that makes up a gene
probability branch of mathematics that helps you predict the chance that something will happen
pedigree tool for tracing the occurrence of a trait in a family
gene a unit of genetic material that determines a trait(located on chromosomes-specific areas on a chromosome
meiosis cell division that happens in sex cells only. produces gametes have one set of unpaired chromosomes
mitosis body cell division
mutation a change in DNA or chromosomes.
zygote sex cells that have been fertilized resulting in a cell with a full set of chromosomes(a diploid cellformed by union of sperm and egg)
Homozygous recessive eg., aa
Homozygous dominant eg., AA
Heterozygous dominant eg., Aa
trait Characteristic that is inherited.
Chargaff's Law A-T and C-G
Created by: michellemele