Genetic Experiments by Thomas Hunt Morgan and Colleagues Examined Eye

question 18

Multiple Choice

Genetic experiments by Thomas Hunt Morgan and colleagues examined eye color in Drosophila fruit flies. Males are XY and females are XX, and the gene responsible for eye color is on the X chromosome. Red eye color (wild-type) is dominant to white eye color (mutant) . The wild type allele is denoted X^w+ and the mutant allele is X^w.
Rarely, ova receive two X chromosomes or no X chromosomes. Offspring resulting from these ova helped to determine the factors underlying sex determination in Drosophila. In a cross between X^w/X^w and X^w+/Y, which offspring of faulty ova could be distinguished from normal offspring by phenotype alone? Please select all that apply.

• A) X^wX^wX^w+ red-eyed female
• B) X^wX^wY white-eyed female
• C) X^w+O red-eyed male
• D) OY

Identify and explain the significance of palindromic sequences and restriction sites in DNA.

Appreciate the role of DNA ligase in DNA replication and recombinant DNA processes.

Understand the use of host cells in genetic engineering, including transformation, transfection, and cloning.

Recognize the advantages and attributes of using different model organisms and systems in genetic research.

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Definitions:

BATNA

Best Alternative To a Negotiated Agreement, the course of action that will be taken by a party if the current negotiations fail and an agreement cannot be reached.

Power Imbalance

A situation where one party in a relationship or negotiation has significantly more influence or control than the other.

Make It Hard to Say No

A negotiation strategy aimed at presenting one's case so compellingly that the other party finds it difficult to decline the offer.

Change the Game

A strategy or approach aiming to fundamentally alter the existing dynamics or rules in a situation or competition.