Which of the following resulted from a genetic variation that was favored by natural selection?

A. cancer in a lab rat

B. the long neck of a giraffe

C. the small size of a Chihuahua

D. smoothness of a river rock

Which of the following ecosystems is balanced? 50 oak trees, 30 squirrels, 15 owls 15 oak trees, 30 squirrels, 50 owls 50 oak trees, 30 squirrels, 30 owls 50 oak trees, 50 squirrels, 50 owls

Which molecule must enter the Calvin cycle continually for the light-independent reactions to take place? RuBisCO RuBP 3-PGA CO2

Which is a key element that is found in all carbohydrates lipids proteins and nucleic acids? A. Ammonia B. Carbon C. Nitrogen D. Legumes

If you observe a cell nucleus under a compound microscope, you will not see a molecule of dna. why will you be able to see the dna you extract?

Which best exemplifies the concept of neuroplasticity? a. the ability to use your arm to draw after the arm was severely broken b. the development of thicker heart muscles in old age after beginning an aerobic exercise class c.

List three solutions that scientists are suggesting to solve the problems caused by monoculture farming

How does molecular genetics add to our understanding of genes?

Which sexually transmitted infection would likely involve the removal of warts as part of its treatment? A-HPV B-HIV C-syphilis D-gonorrhea

How could you separate Tomatoes from a salad?

What is a patient paying if $500 must be paid in order to receive insurance