Adaptations of the Star-Nosed Mole
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Questions and Answers

What is defined as traits that help organisms survive and reproduce in their current environment?

  • Natural selection
  • Inherited traits
  • Adaptations (correct)
  • Genetic mutations

In the context of genetic change and natural selection, what is passed from one mole to its offspring?

  • Genetic mutations
  • Enhanced senses
  • Segmented nose structure (correct)
  • Inherited behaviors

Which type of DNA is most likely to carry the genetic change that resulted in the segmented nose of the star-nosed mole?

  • Ribosomal DNA
  • Mitochondrial DNA
  • DNA of body cells
  • DNA of reproductive cells (correct)

Why were the offspring with the segmented nose structure able to locate prey better?

<p>As a result of genetic change (A)</p> Signup and view all the answers

What term describes genetic changes resulting from mutation and sexual reproduction?

<p>Genetic variation (D)</p> Signup and view all the answers

Which of the following is NOT considered an adaptation?

<p>A genetic mutation (B)</p> Signup and view all the answers

How did the segmented nose structure become more common in the star-nosed mole population over many generations?

<p>As a result of natural selection (D)</p> Signup and view all the answers

Which factor determines whether a trait is considered an adaptation?

<p>'Help organisms survive and reproduce' criterion (A)</p> Signup and view all the answers

'Traits that help organisms survive and reproduce in their current environment' refer to:

<p>'Adaptations' (B)</p> Signup and view all the answers

'Star-nosed moles mostly eat earthworms and aquatic insects' illustrates their _____________.

<p>'Ecological niche' (D)</p> Signup and view all the answers

Study Notes

Adaptations and Evolution

  • The star-nosed mole's unique nose structure allows it to locate prey more effectively, and its specialized nervous system enables rapid processing of environmental information.
  • The mole's constant touch with its environment, up to 15 times per second, helps it detect and capture small prey quickly.
  • The star-nosed mole's adaptations are the result of evolution through natural selection, which requires genetic variation to act on a trait.

Identifying Adaptations

  • The barrel cactus's round stem covered with spines is an adaptation that helps it survive in hot, dry deserts.
  • The scorpion's tough exoskeleton and poison in its curled tail are adaptations that help it thrive in the desert environment.
  • The mountain goat's adaptations enable it to thrive in its current environment.

Genetic Variation and Adaptations

  • Genetic changes, such as mutations, can result in advantageous traits, like the bee-eater's shorter or longer beaks.
  • The bee-eater's adaptations, such as its beak shape, are connected to its environment, and the environment influences which traits are adaptive.

Genes, Traits, and Proteins

  • Genes in DNA code for proteins that determine an organism's traits.
  • The sequence of DNA base triplets determines the amino acid sequence, which in turn affects protein folding patterns and ultimately protein shape and function.
  • Mutations to genes can affect traits in organisms by altering the sequence of DNA base triplets, leading to changes in protein shape and function.

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Description

Explore the unique adaptations of the star-nosed mole that allow it to effectively locate and capture prey. Learn about its specialized nervous system and behavior that aid in rapid information processing and food detection.

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