What is the difference between sex and gender?

1. Sex refers to the biological characteristics/chromosomes a person is born with

2. Sex is what a person identifies as, regardless of biological characteristics

3. Sex is a fluid concept

4. Gender refers to the biological characteristics/chromosomes a person is born with

5. Gender is what a person identifies as, regardless of biological characteristics

6. Gender is a fluid concept

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

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.

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm