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kompoz [17]
3 years ago
6

Place the developments in evolutionary history in the proper time frame.

Biology
1 answer:
BARSIC [14]3 years ago
3 0
B) I, II, IV, III must be the answer
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All cells are surrounded by a membrane.
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it's semipermeable

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_____ (meaning ''spiny skin'') have a water vascular system that functions in locomotion, feeding, and gas exchange.
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Echinodermata

The word echinodermata is Greek which literally means "Spiny Skin". Echinodermata is a phylum under kingdom animalia. Not all of them have spiny skins, but most of them do. Other characteristics would be their radially symmetric body. They have appendages that grow outward from the center. Examples of echinoderms would be sea stars and sea urchins.

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What happens when light goes through a prism
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An enhancer may increase the frequency of transcription initiation for its associated gene when… (indicate true or false for eac
Olenka [21]

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it is located 1000 nucleotides upstream of the gene’s core promoter - true

it is located 1000 nucleotides downstream of the gene’s core promoter- true

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These enhancers are located 50 or more kilobases from the promoter they controlled upstream from a promoter, downstream from a promoter within an intron, or even downstream from the <u>final exon</u> of a gene which can be thousands of bp away from the gene's core promoter and can also occur thousands of nucleotides away from the gene's core promoter needing the activity of a DNA -bending protein that binds to the enhancer changing the shape of the DNA and allow interactions between the activators and transcription factors.

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