Which of the following accurately describes how RNA differs from DNA? RNA is usually single-stranded, RNA is a nucleic acid, and RNA has ribose sugar.

RNA has ribose sugar, RNA has Uracil instead of Thymine, RNA has amino acids instead of Guanine, and RNA is usually single-stranded

RNA has ribose sugar, there are multiple types of RNA, RNA has Uracil instead of Thymine, and RNA is usually single-stranded

RNA can't leave the nucleus, RNA is usually single-stranded, and RNA has Uracil instead of Thymine.

your answer is number 1 “A”

Explanation:

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: