Crossing over of genetic material between homologous chromosomes during Prophase I of meiosis contributes to the variation in genetic composition of sibling animals.

Match the trait and its descriptor.

Which tissue of the uterus has decreased contractility in response to the hormone progesterone? More than one answer may be correct. Points are deducted for incorrect answers.

The [choice] determines which strand of DNA is transcribed. 

Which affect gene regulation processes of protein biosynthesis in animals? There may be more than one correct answer. Points are deducted for incorrect answers.

From where does the phosphorus and ribose come, that are components of DNA come?  

What is the uterine type of the human?

Which enzymes function at an acidic pH? There may be more than one correct answer. Points are deducted for incorrect answers.

Which is accurate for the genetic regulation of most traits such as height of an animal? There may be more than one correct answer. Points are deducted for incorrect answers.

Which is accurate for identical twin animals? There may be more than one correct answer. Points are deducted for incorrect answers.