A couple in their mid-30s are at their primary care provider's office because they have been unable to conceive for 3 years. They already have one child who is 4 years of age. The care provider explains to them that they are dealing with what kind of infertility?
secondary infertility

There are two main types of infertility: primary and secondary. A couple who has never been able to conceive has primary infertility, whereas a couple who has been able to conceive in the past but is currently unable to do so has secondary infertility. T/F

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false

What must be done to breed dogs for a partical trait

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.