Homozygous
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same trait (dominant + dominant) (recessive + recessive)
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Homozygous
same trait (dominant + dominant) (recessive + recessive)
Father of Genetics
Gregor Mendel
2 types of genes for each trait
Dominant and Recessive Genes
the first person to trace the characteristics of successive generations of a living thing
Gregor Mendel (1822 – 1884)
an alternative form of a gene (one member of a pair) that is located at a specific position on a specific chromosome
Allele
process by which alleles are transmitted
Mendel’s Law of Segregation
when paired with recessive gene determines the trait to be expressed.
Dominant genes
are not expressed when paired with dominant gene. [not observable]
Recessive genes
Heterozygous
both dominant and recessive traits
(dominant + recessive)
organism’s full hereditary information, even if not expressed [genes/ DNA]
Genotype
organism’s actual observed properties such as morphology, development, or behavior
Phenotype
states that for any trait, each parent’s pairing of genes (alleles) split and one gene passes from each parent to an offspring
Law of Segregation
PEA PLANTS EXPERIMENT [MONOHYBRID CROSS]
prediction of possible characteristics of offspring
use of Punnett Square
Both equally expressed
Codominance
states that different pairs of alleles are passed onto the offspring independently of each other
Law of Independent Assortment
states that when mating occurs between two organisms of different traits, each offspring exhibits the trait of one parent only
Law of Dominance
Alleles blend
Incomplete Dominance
