populations and Ecoysystems - Section 3

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The final section of Populations and Ecosystems, the impossible section.

Feature

Any general structure, characteristic or behavior of an organism. Things like wings, fur pattern, color, migration, etc...

Trait

The specific expression of a feature in an individual. Things like wing length, density, etc...

Inheritance

The process of passing genetic info from one generation to the next.

Nucleus

An organelle in the eukaryotic cell that is surrounded by a membrane which contains a cell's DNA.

DNA

The blueprint of the cell. This long structure gives the instructions for how the cell functions. This is called inheritance.

Chromosomes

DNA coiled again into a tight structure.

Gene

A section of DNA that contains the instructions of a protein. Different genes control different features.

Allele

The version of the gene. Different alleles can have different traits.

Genotype

The combo of alleles in an organism's chromosomes represented by 2 letters.

Dominant Allele

The version of the gene that is more influential. The trait of this allele that will be seen over the recessive allele.

Recessive Allele

The version of the gene that is more influential. The trait for this allele will be hidden by the dominant allele.

Phenotype

The trait observed in an organism itself.

Homozygous

A genotype with 2 identical alleles. It may be 2 dominant or recessive alleles.

Heterozygous

A genotype with one dominant allele and one recessive allele.

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