Which of these is a characteristic of eukaryotes? They do not have a nucleus. They are older than prokaryotes. They can be unicellular or multicellular. They do not have membrane-bound organelles.

The deserts of the sahara and australia are associated with

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

The table above shows five different types of chromosomal abnormalities that can occur during meiosis. they result in either an individual having too many or too few chromosomes in their genome. what is the most likely cause of these chromosomal abnormalities?