Can you explain the function of teratogen such as thalidomide and alcohol in terms of environment factors that play a role in organisms development?

If assuming tasting ptc as a simple gene trait,what other genotype would you select to put in this missing genotype box that could result in this phenotype

Which statement best describes how the nucleus, the rough endoplasmic reticulum, and ribosomes interact during protein synthesis?

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above