A haploid cell has 20 chromosomes. How many chromosomes does the diploid cell of that organism have?

this organism has 40 chromosomes

Explanation:

diploid = 2n

Haploid = n

haploid = 20 (in this case), so the diploid is...

diploid = 2 × 20

= 40

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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explanation:

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: