Explain how abnormal meiosis may lead to the genetic disorder of down's syndrome?

Which of the following will a bacterium produce when a human gene is added to its genome? question 4 options: human carbohydrates a protein made up of both human and bacterial properties the human protein coded for by the human gene human plasmids that can be isolated from the bacterium

Methane gas created by a cows flatulence especially in a large herd is a greenhouse gas. true or false.

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.