DNA Flashcards
Gene
Section of a DNA that codes for particular trait or characteristic
Allele
A diffrent form of a gene that codes for diffrent version of a characterisic
Genotype
A description of the pair of alleles prsent for a characteristic
Phenotype
The physical expression of the alleles
Variation
The presence of differences between living things of the same species is called variation
Chromosome
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells.
Homozygous
Pair of alleles that produce a characteristic are the same, e.g. HH
Heterozygous
Pair of alleles thatroduce a characteristic are diffrent, e.g HH
Dominant
An allele that will always be expressed even when there is omly one of these alleles present, represented by a captisl letter
Recessive
An allele that will only be expressed when both alleles are this type e.g HH
Clone
A genetically identical organism.
cutting
Small section of a plant is taken and planted.
gene pool
The variety of genes available in a population.
Dolly the sheep
An example of cloning.
characteristics
A feature of an organism.
