In meiosis, crossing over occurs, where homologous chromosomes synapse and their chromatids exchange genetic information. During crossing over, the allele for one trait swaps places with the allele for the same trait on the homologous chromosome. At this point, the sister chromatids are no longer identical. When the chromatids split from each other, there are four unique haploid sperm or egg cells.

whats the drop down answers ?

explanation:

to figure the total magnification of an image that you are viewing through the microscope is really quite simple. to get the total magnification take the power of the objective (4x, 10x, 40x) and multiply by the power of the eyepiece, (usually 10x)

answer///alimentary canal/gastrointestinal tract.digestive (gi);

answer;

-chlorine

explanation;

-toxic industrial chemicals are industrial chemicals that are manufactured, stored, transported, and used throughout the world. toxic industrial chemicals can be in the gas, liquid, or solid state.

-they can be chemical hazards (e.g., carcinogens, reproductive hazards, corrosives, or agents that affect the lungs or blood) or physical hazards (e.g., flammable, combustible, explosive, or reactive).