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Genetics Sect. 1 & 2
Vocabulary Practice
Question | Answer |
---|---|
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 |