Which phase of sex cell production results in homologous pairs of chromosomes forming as the nucleus is disappearing at the start of meiosisy? a. prophase l of meiosis b. anaphase ll c. telophase l d. telophase ll

The answer is A. Other characteristics of this phase;

1.       crossing-over (the physical exchange of chromosome parts) occurs

2.       Chromosome strands coil and become shorter and thicker and visible under the light microscope.

3.       Spindle forms between the two pairs of centrioles as they migrate to opposite poles of the cell.

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