Science-Heredity, Section 1
This is a quick review of Gregor Mendel's study of gentics for tomorrow's Section 1 quiz!
Terms
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- capital letter
- shows a dominant trait
- Punnett Square
- a special chart used to show the possible gen combinations in a cross between two organisms
- phenotype
- visible characteristics of an organism
- dominant trait
- the stronger of two traits that are expressed
- pairs
- what the genes are in; one from the mother, the other from the father
- phenotype
- visible characteristics of an organism
- purebred
- an organism that has the same two genes for a trait (TT or tt)
- heredity
- the passing of traits from one organism to its offspring
- hybred
- an organism that has two different genes for a particular trait (Tt)
- alleles
- different forms a gene may have for a trait
- genotypes
- actual gene makeup of an organism; the gene combination for a trait
- incomplete dominance
- neither gene in a gene pair masks the other. as a result, the two genes appear blended.
- lower case letter
- shows a recessive trait
- recessive trait
- weaker of two traits; the one that seems to dippear, but may show up in later generations
- two letters
- what represent each gene
- traits
- physical characteristics of an organism (height, color, size, etc.)
- genetics
- in the study of heredity
- Gregor Mendel
- father of gentics
- probability
- math that can be used to predict the results of genetic crosses
- genotype
- actual gene makeup of an organism;the gene combination for one trait
- pairs
- genes come in ______; one from the mother the other from the father
- genes
- units of heredity; segments of DNA on a chromosome