What comprises about half of our non-coding DNA?
A. Introns D. Repeating sequences
B. Promoter regions E. Single nucleotide polymorphisms
C. Exons
D
You might also like to view...
The front limbs of birds and bats -- both wings -- are considered to be:
a. homologous structures. b. homozygous structures. c. divergent structures. d. vestigial structures. e. homoplastic structures.
Mycorrhizae are associations between:a
coral animals and dinoflagellates. b. two types of insects. c. fungi and plant roots. d. wasps and orchids. e. epiphytes and rainforest trees.
A primary reason that the kidneys have one of the highest metabolic rates of all body organs is that _____
A) they have membranes of varying permeability to water B) they operate an extensive set of active-transport ion pumps C) they are the body's only means of shedding excess nutrients D) they have an abundance of myogenic smooth muscle
When a woman breast-feeds, oxytocin causes the milk to move from the mammary glands toward the nipples. What other organ might also react when a woman breast-feeds right after giving birth?
A) thymus B) rectum C) perilymph D) uterus