#Question id: 5002
#Unit 11. Evolution and Behavior
All animals with eyes or eyespots that have been studied so far share a gene in common. When mutated, the gene Pax-6 causes lack of eyes in fruit flies, tiny eyes in mice, and missing irises (and other eye parts) in humans. The sequence of Pax-6 in humans and mice is identical. There are so few sequence differences with fruit fly Pax-6 that the human/mouse version can cause eye formation in eyeless fruit flies, even though vertebrates and invertebrates last shared a common ancestor more than 500 million years ago.
The appearance of Pax-6 in all animals with eyes can be explained in multiple ways. Based on the information above, which explanation is most likely?
#Question id: 3513
#Unit 8. Inheritance Biology
RR- red, Rr- pink, rr- white flower color in plant. Pink flower plant allowed to repeated self fertilization up 3 generation. The proportional of pink flower is
#Question id: 21283
#Unit 12. Applied Biology
#Question id: 21123
#Unit 12. Applied Biology
#Question id: 3858
#Unit 3. Fundamental Processes
The 5' methyl guanosine caps added during RNA chain elongation performs what function?
1. prevents degradation by nucleases
2. are recognized by protein factors
3. are used to identify the type of RNA