What is a dominant gene? A gene that is identical in most of the world's population.

A gene that does not change from generation to generation.

A gene with a mutation that affects the surrounding genes.

A gene that is always expressed physically when present.

1 or A

Explanation:

Don't trust me but that's what i think because dominance is the phenomenon of one variant of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome. The first variant is termed dominant and the second recessive.

In the natural world, limiting factors like the availability of food, water, shelter and space can change Animal and plant population. Are they limiting factors, like competition for resources, predation and disease Can also impact populations. Other changes in limiting factors will cause a population to decrease

Explanation: