At what phase of meiosis is the number of chromosomes per cell doubled? (think carefully about this.) what happens after that so that the number of chromosomes per cell does not end up being higher?

Ascientist and her team counted 200 individual deer in an area of 10 square kilometers. what is the population density?

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled