the first 22 pairs of chromosomes are homologous in a normal person is that always true for the 23rd pair of chromosomes?

Which structure of the excretory system in humans is responsible for converting ammonia into urea?

White crowned sparrow birds - How many total birds were there in 1955? How many total birds are there now?

Which is a kingdom? O A. Chordata B. Prokarya O C. Mammalia O D. Protista SUBH

Which organisms use cellular replication called Mitosis? A.) Plants B.) Insects C.) Humans D.) Algae E.) All of the above F.) None of the above

5 facts about the reproductive system

How many chromosomes do humans have? how many copies in normal cells? How many pairs? How many copies in sex cells?

How many times has blastopore fate changed over the course of evolution? -o times -1 time -2 times - multiple times

What is unique about the water near Antarctica? How does it drive global ocean circulation?

A physician examines a patient who complains of breathing problems. She finds fluctuations in the patient's blood pressure and heart rate. The physician thinks it's because of a brain injury. Which part of the brain is affected? A. Cerebellum B.

In natural selection what determines which color grey or green is advantageous