Answer:
Mutations can lead to positive adaptations in an organism
The Vascular system transports water and sugars throughout the plant during photosynthesis.
Answer:
<h2>Yes, the synthesis of threonine occurs because threonine will not be bound to the repressor, so in unbound state, the repressor will be inactive.
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Explanation:
1. If an E. coli bacterium is grown, in an environment where threonine is absent, transcription of threonine synthesis genes take place, because threonine will not be bound to the repressor, so the repressor will be inactive.
2. When the repressor is bound to the threonine, it becomes active, and in the absence of threonine , repressor become inactive because there is no threonine to bind with repressor.
3. So, in the absence of threonine , there is synthesis of threonine occurs.
11. What did Charles Darwin think about on his journey home to England?
He noticed the many patterns of diversity in most species and how these differences varied from island to island
12. After Charles Darwin returned to England, what hypothesis he develop to explain his findings?
Separate species arose from a common ancestor.