What is vestigial Drosophila?

The vestigial (vg) gene of Drosophila melanogaster encodes a nuclear protein which plays a key role in wing formation but is also involved in other developmental processes.

What are vestigial structures?

Vestigial structures are anatomical structures of organisms in a species which are considered to have lost much or all of their original function through evolution. These structures are typically in a degenerate, atrophied, or rudimentary condition or form.

Why are fruit flies used to study mutation?

Fruit flies have a very simple genetic structure, which makes them ideal for genetic research. It is useful to study mutant fruit flies, as their quick reproduction rate allows scientists to observe the advantages and disadvantages of certain mutations.

What is an example of vestigial structures?

Structures that have no apparent function and appear to be residual parts from a past ancestor are called vestigial structures. Examples of vestigial structures include the human appendix, the pelvic bone of a snake, and the wings of flightless birds.

What is mode of inheritance for vestigial wings in Drosophila?

In fruit flies, the dominant V allele produces long wings, whereas the recessive v allele produces vestigial wings. Thus, flies with the genotype VV or Vv will have long wings, and flies with the genotype vv will have vestigial wings.

What are 4 examples of vestigial structures?

Examples of Vestigial Organs

  • Sinuses. Human cheekbones hold the maxillary sinuses.
  • Appendix. It is one of the most commonly known vestigial organs.
  • Coccyx.
  • Wisdom Tooth.
  • External Ear.
  • Nictitating Membrane.
  • Tonsils.
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How do vestigial structures evolve?

Common descent and evolutionary theory Vestigial structures are often homologous to structures that are functioning normally in other species. Therefore, vestigial structures can be considered evidence for evolution, the process by which beneficial heritable traits arise in populations over an extended period of time.