Achange in dna resulting in an incorrect protein is the problem in sickle cell disease. is this normally the problem in genetic diseases?
a. yes, the dna may be "correct" but can produce abnormal proteins which cause disease.
b. no. in other genetic diseases, the proteins are all correctly made, but then they damage the dna.
c. no. most genetic diseases result from errors in cell division.
d. yes, abnormal proteins created by abnormal dna is the problem in all genetic diseases.
e. it's not clear what the problem is in most genetic diseases.

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails. b. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. c. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails have other functions,because prokaryotes don't have nuclei.