Before muller's discovery that radiation induces mutation, scientists had to work on mutations that were found solely by phenotype differences in natural populations. which of the features of drosophila made it a fortuitous choice for morgan and his colleagues?

large number of easily visible phenotypes

Explanation:

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u