Introduction To Genetics

Genetics is a brand of biology that studies heredity.

Vocab

Monohybrid, One gene is different.
Truebred, when the parent has either full dominant traits or full recessive. If the offsring are not identical then the parent is not a truebred.
Genreations, P then F and F2
Ressesive Traits, Requires 2 reccesive traits for it to be expressed in children.
Alliles, each Allele is inherited from an egg and sperm, the gemetes contain either a dominant allele or a recessive allele.
Dominant Traits, Only need 1 and will always be expressed unless 2 ressesive traits are present.
Genotype, The genetic makeup of an individual, there are 3 Homo-dom, hetero, homo-rec.
Homozygous = alleles are the same
Homozygous dominant = 2 dominant. Eg, (TT)
heterozygous = different eg, (Tt)
homzygouse recessive = 2 recessive. eg, (tt)
phenotype = the physical quality of an individual. (TT) = Tall, (tt) = short, Tt = (tall) T codes for height.
Mendels Law of Segregation, Each member of a pair of elleles seperate when gametes are formed, A gamete will recive one allele or the otherm but not both.
Mendels Law of Independant Assortment, two or more pairs of alleles segregate independently of one another during gamete formation, creating atleast four diffrent outcomes
Punnet squares, These are used to predict outcomes among two crosses (two sets of alleles) and to determine possible allelic combinations among offspring.

Gregor Mindel was an Austrian monk born in 1822, that had a background in agriculture, he was the first to study inheritance.

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