Explain how the allele for sickle cell disease, which is a harmful allele when a person is homozygous, can be beneficial when a person is heterozygous.

The DNA molecule is made up of numerous genes. true or false

Which describes the role of a skunk? autotrophic omnivore heterotrophic omnivore autotrophic carnivore heterotrophic carnivore

What is the main function of the cell wall

This type of rock is most likely to contain the fossil remains of ancient organisms: question 13 options: 1) sedimentary 2) igneous 3) metamorphic 4) all of the above

What type of tissue comprises the bulk of the myocardium

Which organism's are omnivores? A) The snake, the bear, and the fish B) The fish and the eagle C) The bear and the fish D) The snake and the mouse If an omnivore is an animal that eats both plants and animals, I'd choose D because all the other

How are all humans similar?

Why does earth have such a diversity of plant and animal life? give three reasons.

After sequencing a molecule of dna, you discover that 20% of the bases are cytosine. what percentage of the bases would you expect to be thymine? explain why.

Kidneys that can conserve water are essential to homeostasis because: a) some animals live in dry or salty environments. b) some animals drink water.