Different forms of the same gene are known as

How many chromosomes are present in a human sex cell?

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

An allele whose trait only shows up when no dominant allele is present.

one set of instructions for an inherited trait

an organism's appearance or other detectable characteristic

genetic makeup

the chances of something happening

having two of the same genes for the trait (sometimes called purebred).

having two different genes for a trait (sometimes called hybrid).

father of genetics

Complex molecules which make up structures and carry out functions of an organism

A single piece of coiled DNA found in the cells; contains genes that encode traits.

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

Complex molecule that carries genetic information that defines an organism's traits. This molecule is stored in the nucleus

the steps of the ladder in DNA

All mutations are harmful.

an image of the chromosomes arranged in pairs in descending order size.

when there is only one of the pair of chromosomes in a karyotype

when there are three of the pair of chromosomes in a karyotype

female chromosomes for the 23rd pair

male chromosomes for the 23rd pair

Where are genes located?