An organism has 12 chromosomes in its sex cell. It undergoes a process producing four daughter cells, each with 6 chromosomes. What is the process?

How does mass extinction affect species that survive? There are no surviving species if a mass extinction occurs. They will soon become extinct. They combine gene pools. They fill new roles in the changed environment.

Consider this animal cell. The organelles in an animal cell are labeled. Part I is the round structure at the center of the cell. Which organelle is labeled I? cell membrane ribosome endoplasmic reticulum nucleus

Which is the DNA tehory? How do we know the DNA contains genetic information?

What negative impact to the environment is caused by organic and inorganic constituents that are dissolved by rain fall A) air pollution B) soil fertility C) groundwater pollution and soil fertility

Which planets have rings? Check all that apply. A. Jupiter B. Mercury C. Satum D. Venus E. Uranus F. Neptune G. Earth H. Mars

Experiment to show transpiration takes place in plants

Where is the cytoplasm located

this structure responsible for the production of ribosomes

Why fresh water fishes pass large quantity of dilute urine

According to the gate-control theory, a back massage would most likely reduce your physical aches and pains by causing activation of nerve fibers in your spinal cord. the cochlea to transduce impulses sent to the spinal cord.