Question

Which of the following organisms would have the lowest predicted gene density (no. genes/megabase of DNA) in genomic DNA?

1) Escherichia coli
2) Homo sapiens (human)
3) Drosophila melanogaster (fruit fly)
4) Neurospora crassa (bread mold)

Answer 1

Neurospora crassa (bread mold) would have the lowest predicted gene density in genomic DNA.

Step-by-step explanation:

The organism with the lowest predicted gene density (number of genes per megabase of DNA) in its genomic DNA would be Neurospora crassa (bread mold).

According to the information provided, the number of genes coded in the genomes of different species varies. Neurospora crassa has approximately 3200 genes, which is the lowest among the options given. In comparison, Escherichia coli has 6000 genes, Homo sapiens has ~25,000 genes, and Drosophila melanogaster has 13,500 genes.

Therefore, based on the gene count, Neurospora crassa is expected to have the lowest predicted gene density.