CH7 Mendel and heredity* Vu
Terms
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- Diagram used by biologists to predict the probable outcome of a cross.
- Punnett square
- The trait that is not expressed in F1 generation after crossing.
- Recessive trait
- Process by which a plant pollinates itself.
- Self-pollination
- A trait that is determined by a gene found on the X chromosome.
- Sex-linked trait
- Condition caused by a mutant allele that produces a defective form of the protein hemoglobin.
- Sickle cell anemia
- Displaying only one form of a particular trait in offspring.
- True-breeding
- Law stating that pairs of genes separate independently of one another in meiosis.
- Law of independent assortment
- Genetic disorder in which an individual lacks an enzyme that converts the amino acid phenylalanine into the amino acid tyrosine.
- Phenylketonuria (PKU)
- An alternative form of a gene.
- Allele
- Condition in which both alleles for a gene are expressed when present.
- Codominance
- A genetic phenomenon in which a trait is controlled by several genes and therefore exhibits a variety of phenotypes.
- Continuous variation
- Transfer of pollen from the male structures of one plant to the females structures of a different plant of the same species.
- Cross-pollination
- A cross that involves two pairs of contrasting traits.
- Dihybrid cross
- Trait that is expressed when its allele is homozygous or heterozygous.
- Dominant trait
- The offspring from a cross of two varieties.
- F1 generation
- The offspring from crosses among individuals of the F1 generation.
- F2 generation
- Harmful effect,such as sickle cell anemia,produced by mutated genes.
- Genetic disorder
- Study of heredity.
- Genetics
- Genetic constitution of an organism as indicated by its set of alleles.
- Genotype
- Component of rad blood cells that binds with and carries oxygen through the body.
- Hemoglobin
- Genetic disorder that impairs the blood's ability to clot and can cause excessive bleeding.
- Hemophillia
- Transmission of genetic traits from parent to offspring.
- Heredity
- Refers to a pair of genes, or an individual, with two different alleles for a trait.
- Heterozygous
- Refers to a pair of genes, or an individual, with two identical alleles for a trait.
- Homozygous
- Condition in which a trait is intermediate between two parents.
- Incomplete dominance
- Law stating that pairs of genes separate in meiosis and each gamete receives one gene of a pair.
- Law of segregation
- Cross involving one pair of contrasting traits.
- Monohybrid cross
- Having more than two alleles( versions of the gene) for a genetic trait.
- Multiple alleles
- Change in the DNA of gene or chromosome.
- Mutation
- Family history of traits recorded over generation.
- Pedigree
- (Parental generation) plants that displayed only one form of a particular trait.
- P generation
- Observable characteristics of an organism.
- Phenotype
- The likelihood that a specific event will occur.
- Probability