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Ch.3 Life Scienc (B)
Heredity and Genetics
Question | Answer |
---|---|
homozygous | having two like genes for the same trait; |
heterozygous | having two unlike genes for the same trait; |
dominant gene | gene whose trait always shows itself; |
recessive gene | gene of a trait that is hidden when the dominant gene is present; |
Punnett Square | chart that shows possible gene combinations; |
gender | sex of a person or other organism; |
sex-linked traits | traits that are controlled by the sex chromosomes; |
carrier | an organism that has a recessive gene for a trait but does not show the trait; |
pedigree | chart that shows inheritance of certain traits over several generations; |
inherited disease | disease caused by an inherited gene; |
probability | the chance of an event occurring; |
genotype | the gene combination for a given trait in an organism; |
phenotype | the appearance of a trait in an organism; |