What is it called when several species share a common ancestor

Which of the following statements are correct? Choose all that apply Euchromatin is more tightly packed because it has a higher gene density. The interchromosomal domains are the regions between chromosomal domains, and nothing happens there.

What elements are found in lipids, proteins, and carbohydrates?

How are surface area of lungs important for gaseous exchange

A patient is dependent on a respiratory ventilator and has a tracheostomy in need of revision due to redundant scar tissue formation surrounding the site at the skin of the neck.

Which of the following modifies and smoothes the respiratory pattern? A) pontine respiratory centers B) ventral respiratory group (VRG) C) dorsal respiratory group (DRG) D) diencephalon

An element's atomic number is 5. How many protons would an atom of this element have?

Biology is the study of living things. Why do you think viruses are discussed in biology books?

How many cotyledons would be found in a flowering plant with nine petals on each flower and long leaves with parallel leaf veins? a. Three b. Zero c. Two d. One

Use photosynthesis in a sentence

What is Chromatid? what is genome?