Why Did Natural Selection Favor the Use of Thymine as a Base

question 90

Multiple Choice

Why did natural selection favor the use of thymine as a base in DNA instead of uracil even though uracil was presumably present in RNA, when it served as the genetic material during the early evolution of life?

• A)Thymine was more stable.
• B)Thymine paired better with adenine than did uracil.
• C)Retention of uracil as a DNA base would make it hard to tell whether a uracil was supposed to be at a particular site or whether it resulted from damage to cytosine.
• D)Thymine is resistant to all chemical treatments.
• E)Retention of uracil as a DNA base would make it hard to tell whether a uracil was supposed to be at a particular site or whether it resulted from damage to guanine.

Understand the process of preparing different types of budgets (static, flexible, and variable) and their relevance in financial planning.

Interpret the significance of variances and their relation to budget performance reports for effective management and control.

Recognize the responsibilities of different departments (e.g., purchasing, production) in managing costs and variances.

Apply budget variance analysis to sales and operating income to support planning and control purposes.

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Definitions:

Poverty Rate

A measure indicating the proportion of the population whose income falls below the threshold considered necessary to meet basic living expenses.

Liberal Solution

A term not universally defined, possibly referring to a problem-solving approach based on policies or ideas associated with liberal ideologies, emphasizing freedom, democracy, and equality.

Welfare Dependency

A condition wherein individuals or families rely extensively on government assistance programs for their income over an extended period, potentially inhibiting self-sufficiency.

Child Poverty

The state of children living below the poverty line, affecting their well-being, education, and future opportunities.