What is an Allele?

What is the number of the chromosome that determines your sex?

23

Different forms of the same gene. A variation of a gene's nucleotide sequence (an alternative form of a gene).

Allele

An allele whose trait always shows up in the organism when the allele is present.

Dominant Allele

An organism's genetic makeup or allele combinations

Genotype

Describes an organism with two different alleles for a trait.

Heterozygous

Describes an organism that has two identical alleles for a trait

Homozygous

The process by which physical and biological characteristics are transmitted from the parent (or parents) to the offspring

Inheritance

An organism's physical appearance, or visible traits.

Phenotype

An allele that is masked when a dominant allele is present

Recessive Allele

the chromosome has two different copies of the gene that controls the trait

Somatic Cell

A characteristic that an organism can pass on to its offspring through its genes.

Trait

female coding

XX

male coding

XY

trait not determined by genes

acquired trait

Some traits exhibit a large number of phenotypes because the traits are controlled by genes with many different

alleles

What is the offspring from asexual reproduction called?

clone

proteins determine

function

GG

hetero

Gg

homo dominant

gg

homo recessive

How many parents are needed for asexual reproduction?

one

Genes code for

proteins