Suppose That Two Strains of E

question 85

Multiple Choice

Suppose that two strains of E. coli - strain a (bio^- met^- leu⁺ thr⁺ thi⁺) and strain b (bio⁺ met⁺ leu^- thr^- thi^-) - conjugate. If the two strains are grown on minimal medium, what is the most likely genotype of their offspring?

• A) bio⁺ met^- leu^- thr^- thi⁺
• B) bio⁺ met⁺ leu⁺ thr⁺ thi⁺
• C) bio⁺ met⁺ leu^- thr^- thi⁺
• D) bio^- met^- leu^- thr^- thi⁺

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Definitions:

Gestation

The time of growth from when an egg is fertilized until the organism is born.

Stem Cells

Unspecialized cells capable of renewing themselves and differentiating into various cell types, offering potential in regenerative medicine.

Progenitor Cells

Cells that have a limited capacity for differentiation and self-renewal, capable of generating more specialized cell types.

Glial Cells

Specialized cells in the nervous system that support, nourish, and protect neurons, playing a critical role in maintaining the optimal environment for neural function.