Question

Choose the correct sequence starting with the smallest unit:?
a. Nucleotide, allele, gene, DNA, chromosome
b. Gene, nucleotide, allele, DNA, chromosome
c. Nucleotide, DNA, allele, gene, chromosome
d. DNA, gene, allele, chromosome, nucleotide Any idea?

Answer 1

c.Nucleotide, DNA, allele, gene, chromosome 

Answer 2

The right option is c. Nucleotide, DNA, allele, gene, chromosome

Nucleotide is the basic structural unit (monomer) of a nucleic acid such as DNA.

DNA is a polymer of nucleotides that contains genetic information of a cell. A DNA nucleotide is made up of three parts which are; a nitrogen base, a five-carbon sugar, and a phosphate group.

An allele is a possible form of a gene. Genes usually have two alleles; a recessive allele and a dominant allele.

A gene is a small part of DNA that stores information.

Chromosomes are thread-like structures, composed of protein and one molecule of DNA that carry genetic information in the form of genes.