A Diagram of the Mutagenesis and Crossing Strategy Used by Nüsslein-Volhard

question 8

Multiple Choice

A diagram of the mutagenesis and crossing strategy used by Nüsslein-Volhard and Wieschaus to generate and maintain segmentation mutants is shown. Male flies were exposed to EMS (a mutagen) and mated to a non-mutagenized female. How did the researchers ensure that the offspring of Cross B (i.e., the offspring seen in generation C in the diagram) were heterozygotes that carried a mutagenized chromosome? Please select all that apply.

• A) CyO homozygotes die
• B) Flies homozygous for segmentation mutations usually die
• C) Only male flies were mutagenized
• D) The female parent in Cross B carries a temperature-sensitive lethal allele

Understand the effectiveness of various interventions and treatment approaches for substance dependency.

Describe harm reduction and behavior modification strategies in coping with substance use.

Recognize the models of alcoholism and their implications for treatment.

Understand the prevalence and demographics of substance use in different populations.

---

Definitions:

Words

Basic units of communication in language, consisting of one or more phonemes and bearing a specific meaning.

Thinking

The process of considering or reasoning about something, involving cognitive processes to solve problems or make decisions.

Vocabulary Emotions

The set of emotions that can be described and identified through specific words in a given language.

Interpersonal Emotions

Feelings that occur within interpersonal relationships including love, jealousy, empathy, and guilt, significantly affecting social interactions.