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Genetics Sect. 1 & 2

Vocabulary Practice

QuestionAnswer
The likelihood or odds that a particular event or outcome will occur Probability
The scientific study of heredity Genetics
A chart used by scientists to show all the possible allele combinations that can result from a genetic cross Punnett Square
An organism's physical appearance or visible traits (the way it looks), such as hair color or height Phenotype
An organism's genetic makeup or allele combinations and identified with letter combinations such as TT, Tt, and tt Genotype
Classification for having two identical alleles for a specific trait such as tt or TT Homozygous
Classification for having two different alleles for a specific trait such as Tt Heterozygous
Characteristics, such as skin color and eye shape, that an organism can pass on to its offspring through its genes Trait
An allele that is masked when paired with a dominant allele and is identified with lower case letters such as t Recessive Allele
An organism that has identical alleles or is homozygous for a particular trait and always produces the same trait in the offspring Purebred
An organism that has two different alleles or is heterozygous for a particular trait Hybrid
The passing of traits, such as eye and hair color, from parents to offspring Heredity
A segment or particular part of DNA found on a chromosome that codes for a specific trait Gene
An allele whose trait always shows up in organisms when the allele is present and is identified as a capital letter such as T Dominant Allele
Different forms of a gene and is identified by upper and lower case letters such as T and t Alleles
Created by: vplatto