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7LS - Genetics
7th Grade Life Science Heredity and Genetics
Term | Definition |
---|---|
Deoxyribonucleic Acid (DNA) | Strands of genetic material that store hereditary information. |
hybrid | An organism that has two different alleles |
genes | Segments of DNA strands that code for a specific trait; it is the instruction manual. |
genetics | The study of how genes interact and how traits are passed down from parent to offspring. |
heredity | The passing of traits from one generation to the next. |
Traits | A genetically determined characteristic |
genotype | The genes of an organism |
phenotype | The visible traits or genes that are expressed in an organism |
homozygous | Two of the same allele, like two dominant alleles or two recessive. |
heterozygous | One recessive and one dominant allele. |
punnett square | A tool to figure out the probability that an offspring will express a certain trait. |
chromosomes | A DNA molecule with part or all of the genetic material of an organism. |