Question

15/17
how are genes mapped today compared to morgans time?
using punnett squares
by sequencing dna
through breeding experiments
observing phenotypes

Explanation:

Punnett squares are used for predicting genetic crosses, not modern gene mapping. Breeding experiments and observing phenotypes were more common in Morgan's time. DNA sequencing is a modern technique that directly analyzes the DNA sequence to map genes accurately.

Answer:

By sequencing DNA