Mrs. Lewis's 8th Grade Science Vocabulary--Dec3-7, 2007
Terms
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- gene
- a segment, or part, of DNA that codes for a certain characteristic
- genetics
- the scientific study of heredity
- genotype
- the letter combinations
- recessive allele
- a trait that is there, but is hidden
- trait
- a characteristic that an organism can pass on to its offspring through its genes
- heredity
- the passing of characteristics from parent to offspring
- heterozygous
- having two different alleles for a trait
- purebred
- a characteristic passed from parent to offspring that is exactly like the parent
- dominant allele
- a trait that is always seen when it is present
- phenotype
- anything you can look at and identify
- alleles
- the different forms of a gene
- homozygous
- having two identical alleles for a trait
- punnett square
- a chart that shows all possible combinations of alleles
- hybrid
- an organizm that has two different alleles fro a trait