How does sexual reproduction play an important role in variation? A. Implantation into the uterus provides the embryo with DNA from the mother to create more variation.
B. Production of unique gametes during meiosis, and the random combination of male and female gametes upon fertilization provides a large amount of variation.
C. Male and female gametes combine randomly during fertilization, and then each gamete randomly selects half of its DNA to give to the embryo.
D. Sexual reproduction is not related to variation.

How do antiviral drugs work? in your own words.

Explain why phospholipid molecules form a bilayer. (3 marks)

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote