List four possible reasons that explain the importance of introns
What will be an ideal response?
(1 ) introns allow for alternative splicing, (2 ) exon shuffling, which can aid in evolution of new genes, (3 ) the intron can be a microRNA itself that can regulated gene expression, and (4 ) introns can contain enhancer and silencer sequences that aid in gene regulation.
You might also like to view...
A. Argue in support of using adult tissue stem cells rather than embryonic stem cells. B. Argue against using adult stem cells rather than embryonic stem cells.
What will be an ideal response?
Before contact with Europeans, a tiny, isolated group of South Pacific islands had a population of about 50,000 people. Because of poor management of their own resources, the population fell to around 5000 by about the year 1750. When Europeans finally
arrived, they brought smallpox, and after the ensuing epidemic, only about 800 islanders were left alive. The unusual genetic makeup of the native population is due to what phenomenon? A) speciation B) gene flow C) genetic drift D) bottleneck effect
A Viceroy caterpillar feeds on a leaf. One day's feeding consumes 1000 calories worth of leaves. 50% of the calories are lost in its feces and 33% of the calories are used in cellular respiration.How many calories of the original intake are available to add to the caterpillar's biomass each day?
A. 830 calories B. 330 calories C. 500 calories D. 170 calories E. 670 calories
What are the total gross (not net) final products from one molecule of glucose after glycolysis?
a. four pyruvate, two ATP, and two NADH b. two pyruvate, two ATP, and two NADH c. two pyruvate, four ATP, and two NADH d. one pyruvate, one ATP, and one NADH