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Homozygous
same trait (dominant + dominant) (recessive + recessive)
Father of Genetics
Gregor Mendel
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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

<p>both dominant and recessive traits </p><p>(dominant + recessive)</p>

organism’s full hereditary information, even if not expressed [genes/ DNA]

<p>Genotype</p>

organism’s actual observed properties such as morphology, development, or behavior

<p>Phenotype</p>

states that for any trait, each parent’s pairing of genes (alleles) split and one gene passes from each parent to an offspring

<p>Law of Segregation</p>

PEA PLANTS EXPERIMENT [MONOHYBRID CROSS]

<p>prediction of possible characteristics of offspring </p><p>use of Punnett Square</p>

Both equally expressed

<p>Codominance</p>

states that different pairs of alleles are passed onto the offspring independently of each other

<p>Law of Independent Assortment</p>

states that when mating occurs between two organisms of different traits, each offspring exhibits the trait of one parent only

<p>Law of Dominance</p>

Alleles blend

<p>Incomplete Dominance</p>

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