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Genetics
Basic Mendelian Genetics
18
Biology
8th Grade
11/21/2011

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Term
hybrid
Definition
An offspring that received DIFFERENT traits (or alleles) from each parent. (ex. Gg) (AKA heterozygous)
Term
capital letters
Definition
The way letters are written in a Punnett square to show that a trait is dominant.
Term
lower case letters
Definition
The way letters are written in a Punnett square to show that a trait is recessive.
Term
tt
Definition
An example of homozygous recessive alleles.
Term
TT
Definition
An example of homozygous dominant alleles.
Term
heredity
Definition
The passing of traits from parents to offspring.
Term
meiosis
Definition
The process when pairs of chromosomes seperate to form sex cells. (sperm & eggs)
Term
genetics
Definition
The study of heredity.
Term
Gregor Mendel
Definition
An Austrian monk who worked with pea plants to discovered the basic rules of genetics.
Term
pure
Definition
An organism with the same alleles from each parent.(ex. GG or gg) (AKA homozygous)
Term
recessive genes
Definition
These genes are only revealed when there is no dominant genes present.
Term
genes
Definition
A section or piece of chromosome.
Term
Tt
Definition
An example of heterozygous alleles.
Term
green, tall, white flowers, etc.
Definition
Examples of phenotypes in pea plants.
Term
Gg, TT, Pp, etc.
Definition
Examples of genotypes.
Term
Punnett square
Definition
A tool used to predict the outcome of a genetic cross.
Term
46
Definition
The number of chromosomes in human body cells.
Term
23
Definition
The number of chromosomes in human sperm & egg cells.
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