Each cell contians 23 pairs of chromosomes
<span>Alfred Wegener first proposed the theory
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Answer:
50% slipper footed, 50% non-slipper footed
The correct answer is: A. A change in a cell's genetic material.
Mutations occur in DNA as a result of mistakes during the DNA replication (when repair mechanisms don’t fix it) or as the result of environmental factors (e.g. UV light). Mutations can have positive impact, by increasing the genetic variation or can have negative effect, causing the diseases or cancer.
Answer:
Star Creek is flowing from East to West, that is because the creek is small and has just begun to form as an extension of the Cayuta Creek.
Explanation: