The Genomes of Some Vertebrates Are Much Smaller Than Those

question 53

Essay

The genomes of some vertebrates are much smaller than those of others.For example, the genome of the pufferfish Fugu is much smaller than the human genome, and even much smaller than genomes of other fish, primarily because of the small size of its introns.
A.Describe a mechanism that might drive evolution toward small introns or loss of introns and could therefore account for the evolutionary loss of introns according to the "introns early" hypothesis.
B.Describe a mechanism that might drive evolution toward more or larger introns and could thereby account for the evolutionary appearance of introns according to the "introns late" hypothesis.

---

Definitions:

Transportation System

Refers to the infrastructure, modes, and operations involved in the movement of goods and people from one location to another.

Adaptive Selling

A sales approach that involves customizing the sales method based on the nature of the customer or sales situation.

Suggestive Selling

A sales technique where the seller recommends additional products or services to the customer, often based on the customer's initial selection or inquiries.

Decorating Trends

Patterns or movements in interior and exterior design that become popular among a significant number of people over a certain period.