The various exons in the light and heavy chains of immunoglobulin genes correspond with the functional domains of the protein. Discuss how this could have arisen during evolution
What will be an ideal response?
Ans: According to the "introns early" model, exons encoding protein domains existed in a "sea" of introns, and through recombination, new combinations of exons to generate more complex proteins were created.
You might also like to view...
Based on the characteristics of crenarchaeote archaeons and euryarchaeote archaeons, these organisms likely evolved in oxygen-poor habitats
A. true B. false
Parasites always complete their life cycle in a single host species
Indicate whether the statement is true or false
The mass extinction at the end of the Cretaceous period was likely the result of:
a. rising seawater. b. loss of vegetation. c. extreme predation. d. a dramatic change in climate. e. the appearance of new competitors.
Through meiosis
A) alternate forms of genes are shuffled. B) offspring are provided with new gene combinations. C) parental DNA is divided and distributed to forming gametes. D) the diploid chromosome number is reduced to haploid. E) All of the choices are correct.