It cannot be expressed but
ses will be expressed equally
d equally in
1. which of the following best describes mendel's law of dominance?
a when an organism has two different alleles of the same gene, both genes will
he genes will be expressed an
pressed and
organism.
b when an organism has two different alleles of the same gene, one of the genes
other will be hidden.
© when an organism has two of the same alleles for a gene, that allele is always
when an organism has two of the same alleles for a gene, the stronger of the ti
the organism.
that allele is always dominant.
tronger of the two genes will be ex
ill be ex

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

true is the