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Genetics

TEKS 8B Vocabulary Monohybrid and Dihybrid Crosses

TermDefinition
1. Genetics Study of heredity.
2.Heredity Passing of traits from parents to their offspring.
3. DNA Deoxyribonucleic acid. Contains the genes and its function is to store and transmit genetic information.
4. Gene(s) Portion(s) of DNA that codify for proteins and controls a trait.
5 Traits Any physical characteristics that can be passed from parents to offspring. Traits can be determined by genes or environmental factors.
6 Allele Versions of a gene.
7. Dominant Determines the trait, even when is heterozygous or homozygous. Is represented by CAPITAL LETTERS.
8. Recessive Determines the trait only when both alleles are recessive. Is represented by lowercase letters.
9. Genotype The genetic makeup of an organism. The combination of alleles.
10. Phenotype Observable physical characteristics of an organism, including its physical traits.
11. Homozygous/Purebred An organism has two identical alleles of a gene.
12. Heterozygous/Hybrid An organism has two different alleles of a gene.
13. Mitosis Somatic cells divide to produce two identical daughter cells.
14 Meiosis Specialized cell division to produce gamete cells, sperm or eggs.
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