is easy to recognize a turtle as a turtle, but why has it been difficult to categorize them
taxonomically?
What will be an ideal response?
Morphological and molecular data are sometimes at odds with each other. Older data suggest turtles to
be anapsids, while current classification indicates they are diapsids. This classification suggests that
turtles lost diapsid traits and returned to what appears to be the anapsid condition. However, recent
fossil, morphological and genetic analysis provides support for the classification of turtles as anapsids.
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Which of the following is not a part of the mitotic spindle apparatus in plants?
A. centrosome B. centriole C. tubulin protein D. kinetochore microtubules E. astral microtubules
Which of the following cell types does not move materials through the body of the plant?
A. sclerenchyma B. xylem vessel members C. sieve tube members D. tracheids E. sieve cells
The role of maternal effect genes in Drosophila is to:
a. code for the production of yolk proteins. b. prepare the female fly for reproduction. c. control the early stages of Drosophila development. d. control the development of the pupa. e. control the shape and size of the eggs produced.
The way in which DNA, RNA, and proteins are all involved in putting genetic information into action in living cells is called
a. transcription b. viral transfer c. translation d. gene expression