Which of these are characteristics of reptiles? Check all that apply.

They undergo internal fertilization.

Their urine is concentrated.

They use their skin for gas exchange.

They have two-chambered hearts.

They are covered in scales.

Sexual reproduction promotes genetic variation. One way variation occurs is via the production of gametes during meiosis. Sexual organisms are the product of sperm and egg, receiving chromosomes from both parents.

Which of the following is the best definition of a dominant allele? A. The allele that is expressed only if the individual is homozygous B. The allele that is expressed only if the individual is heterozygous C.

Do you think plate motion would take place on that planet? Why or why not?

The process of evolution, or genetic change over time, has resulted in the wide variety of living things that exist today.

Which sequence of terms best summarizes Darwins Theory of Natural Selection?

In a species of dogs, a black coat is dominant over a white coat. The offspring from a black dog and a white dog all have gray coats. This is an example of 1) incomplete dominance 2) complete dominance 3) codominanc 4) sex-lined genes

This is produced when the liver converts the carbon skeleton of an amino acid.

Can someone explain the science of the gluteus maximus

Proteins can perform many different functions in living cells. One major function-acting as a catalyst for chemical reactions-can also be performed by what other kind of organic molecule? A.) cholesterol B.) phospholipids C.) glycogen D.) RNA

Blank interactions occur between individuals of the same species