What are nucleotides, genes and genomes?

nucleotides=    DNA, A complex molecule that stores information using four basic coding parts, which are called nucleotides.

genes=  Chromosome A collection of genes in a long, single strand of DNA.

genomes= Genomes All the DNA that makes up the complete genetic instruction manual for humans and other organisms.

Los pasos de una investigación científica incluyen identificar una pregunta o problema de investigación, formar una hipótesis, reunir evidencia, analizar evidencia, decidir si la evidencia respalda la hipótesis, sacar conclusiones y comunicar los resultados.