Which of the following statements is true?
Convection currents in the mantle cause the movement of crustal plates.
The earth's core is made of liquid metal.
The earth's crust is very hard and strong. It is difficult for magma to break through.
The presence of sedimentary rocks means the area was once near an active volcano.

How does natural selection change thephenotypes within a population over time?

Refer to the family pedigree shown here. in generation i, one parent is affected by the gene mutation and one parent isn't. in generation ii, all three children are affected by the gene mutation. what can you conclude about this gene mutation? a. all children born in future generations will be affected by this disorder. b. this gene mutation is a dominant disorder. c. this gene mutation is a recessive disorder. d. the generation i mother is a carrier of this gene mutation.

Mrna: gcuaauguc what amino acids does the mrna above code for? what type of amino acids or function are uag, uga, and uaa coding for? which codon (3 letters) signals translation to start and also codes for the amino acid methionine (met)?