A chromosome-transmitted form of intellectual disability caused by the presence of an extra copy of chromosome 21 is called what?

Scientists have successfully cloned animals, including large mammals such as sheep. Which statement provides the most likely reason that a human has not yet been cloned? (1) Humans have DNA that is structurally very different from other mammals.

Why do pandemics remain so difficult to prevent, contain, and treat?

While using a microscope to examine the cell of an unknown organism, you see that the cell has a nucleus, a cell wall, ribosomes and mitochondria. what kind of organism do you think this cell belongs to?

Which method is suitable for restoring biodiversity in the situation describe

The dominant gas in the atmosphere that forms clouds i

Which blood group is the worlds Rarest Blood grup

A person eats 736,000 kCal of food in one year. They use 729,000 kCal of energy via cellular respiration in that year. A pound of fat stores 3500 kCal. How many kCal consumed in that year are stored in the person's body tissue?

A condition in which the blood is deficient in red blood cells, hemoglobin, or both is:

What type of bird has a specialized beak for eating insects? a. hawk b. buzzard c. falcon d. robin

Which type of unconformity exists between parallel layers of sedimentary rock? a. disconformity b. nonconformity c. angular unconformity