At the Beginning of This Century There Was a General

question 15

Multiple Choice

At the beginning of this century there was a general announcement regarding the sequencing of the human genome and the genomes of many other multicellular eukaryotes. There was surprise expressed by many that the number of protein-coding sequences is much smaller than they had expected. Which of the following accounts for most of the rest?

• A)"junk" DNA that serves no possible purpose
• B)rRNA and tRNA coding sequences
• C)DNA that is translated directly without being transcribed
• D)non-protein coding DNA that is transcribed into several kinds of small RNAs with biological function
• E)non-protein coding DNA that is transcribed into several kinds of small RNAs without biological function

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Definitions:

Family Studies

An academic and research field that explores the dynamics, relationships, and functions within families.

Twin Studies

Research methods that compare the similarity between monozygotic (identical) and dizygotic (fraternal) twins to understand genetic and environmental influences.

Genetic Factors

Components within an organism's genes that influence its traits and can affect its development and behavior.

Adolescence

The transitional stage of physical and psychological development that generally occurs during the period from puberty to legal adulthood.