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Genetics Unit Vocab
Terms in this set (26)
Genetic material made up of nitrogen bases and a sugar-phosphate backbone; found on chromosomes in the nucleus of a cell
One gene in a gene pair; represents the different tratis; useful in matching DNA evidence
The actual gene letters for a trait, such as XY or XX.
The physical appearance of a trait; such as brown hair or blue eyes.
Trait that is expressed (seen) when two different genes are present, such as B in Bb.
Trait that is "hidden" when two different genes are present, such as b in Bb.
Humans have a total of 46 of these; found in the nucleus and contains genetic information
A change in the nucleotide-base sequence of a gene or DNA molecule
A chart that shows all the possible combinations of alleles that can result from a genetic cross
Segments of DNA found on chromosomes; may be dominant or recessive
An organism that has two DIFFERENT alleles for a trait, such as Hh or Yy; also called a hybrid
An organism that has two of the SAME alleles for a trait, such as HH or hh; also called a purebred
Represents the gene pair for a human female
Represents the gene pair for a human male
A genetically determined characteristic, such as dark hair or attached earlobes
Father of genetics
Type of plants used by the Father of Genetics to study heredity
Tt x Tt = ____ % chance for an offspring with the recessive trait.
Tt x Tt = ____ % chance for an offspring with the dominant trait.
TT x tt = ____ % chance for an offspring with the recessive trait
TT x tt = ____ % chance for an offspring with the dominant trait
Two of the same alleles for a trait; also called homozygous
Two different alleles for a trait; also called heterozygous
A trait controlled by two or more genes
The type of letter used to represent dominant traits
The type of letter that denotes a recessive trait.
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