Section 18.4

What is one way new genes can evolve according to the text?

• Through deletion

• Through duplication, followed by modification

• Through translation

• Through transcription

What is the process called when paired chromosomes swap DNA?

• Crossing-over

• Transcription

• Translation

• Deletion

The human genome contains six copies of the gene for which protein?

• Alpha-globin

• Beta-globin

• Gamma-globin

• Delta-globin

Chromosomes can break and reconnect, lose bits and pieces of DNA, and acquire DNA sequences from which sources?

• Viruses

• Microorganisms

• Other chromosomes

• All of the above.

Insects have just how many pairs of legs?

• 1

• 2

• 3

• 4

What is the main topic discussed in the provided content?

• Genetic disorders

• Evolutionary biology

• Hox genes and their role in development

• Dietary habits of insects.

What evolutionary concept is highlighted by the change in the Ubx gene?

• Genetic drift

• Natural selection

• Major evolutionary differences

• Speciation

In the context of the content, what does the term 'Ubx' refer to?

• A) A type of protein

• B) A Hox gene affecting leg development

• C) A dietary supplement

• D) A color pigment.

What is the role of neutral mutations in evolution?

• They drive natural selection.

• They accumulate at a constant rate.

• They cause major phenotypic changes.

• They prevent evolution.

Timing changes in embryonic development can make the difference between: A) long, slender fingers and short, stubby toes. B) large and small embryos. C) fast and slow growth rates. D) different colors of embryos.

• long, slender fingers and short, stubby toes

• large and small embryos

• fast and slow growth rates

• different colors of embryos