The correct answer is one of its two alleles.
D. the number of mates on the island
their appearance changes cause different birds breeding together can make an impact of how the bird looks
Answer:
Examples of vestigial structures include the human appendix, the pelvic bone of a snake, and the wings of flightless birds. Vestigial structures can become detrimental, but in most cases these structures are harmless; however, these structures, like any other structure, require extra energy and are at risk for disease.
Explanation:
sincerely, micah
The Gram-positive bacteria have a thicker cell wall than the Gram-negative bacteria.