B. it had to have been in a warm area and then moved there by plate tectonics over time due to the warm-climate plant fossils found there
Explanation:
One evidence that suggests that ancient Antarctica was situated in a different location from today is seen in the warm-climate fossils plants found there.
- Antarctica today occupies the southern polar region of the earth.
- It the coldest region on earth with very extreme of cold.
- From the theory of continental drift proposed as subset of plate tectonics, the continent Antarctica was once a landmass in a tropical region with lush green plants.
- Fossils of palm fronds and seeds of tropical plant species have been unearthed in some sedimentary layers in the continent.
- The scientific explanation to this is that the continent was once up above it's current position.
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"Light reactions need light to produce organic energy molecules. They are initiated by colored pigments, mainly green colored chlorophylls. Dark reactions make use of these organic energy molecules. This reaction cycle is also called Calvin Benison Cycle, and it occurs in the stroma."
Answer:
D
Explanation:
<u>Sister chromatids</u> will have the same form of alleles at the locus after S phase.
<em>This is because during the S phae of the cell cycle, sister chromatids are replicated in preparation for cell division. The replication process is quite accurate such that all the alleles present on the initial chromatids are also replicated on the new sister chromatids. Hence, both new and old chromatids will have the same form of alleles at the locus after replication at the S phase. In other words, sister chromatids are exact copy of one another.</em>
The correct option is D.
The answer is (A) cristae
