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7LS - Genetics

7th Grade Life Science Heredity and Genetics

TermDefinition
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.
Created by: mdgalla
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