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crimeas [40]
4 years ago
9

Which properties are characteristic of the group 1 metals?

Biology
1 answer:
Ipatiy [6.2K]4 years ago
5 0
The alkali metals have the following properties in common such as:
-low melting points 
-low boiling points 
-very soft
-can be cut with a knife
-low densities
-some may float on water

Hope this helps.
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Explain how the same four nitrogen bases contribute to the variation seen between you and other humans.
Alexandra [31]

The four nitrogen bases contribute to the variation between humans because the order of nucleotides determines phenotypic features associated with genetic inheritance.

  • In DNA, there are four types of nucleotides, each containing one different nitrogen base.

  • The four nitrogen bases in DNA nucleotides are Adenine, Guanine, Cytosine, and Thymine.

  • The linear order of these nucleotides in genes largely determines the phenotypic features associated with genetic inheritance.

In conclusion, the four nitrogen bases contribute to the variation between humans because the order of nucleotides determines phenotypic features associated with genetic inheritance.

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brainly.com/question/19461188

7 0
3 years ago
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Photo 51 is a picture of the structure of DNA that was used to create a model of DNA. Who created the photo?
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Photo 51 is an image of the DNA structure that was used to create a DNA template. Rosalind Franklin managed to photograph a DNA molecule.

<h3>Who took the first DNA picture?</h3>

During the four years she spent in France, Rosalind Franklin perfected herself in the use of x-ray crystallography, a technique used to create images of microscopic elements. It was through her that, already at King's College, chemistry managed to photograph a DNA molecule.

With this information, we can conclude that Photo 51 is an image of the DNA structure that was used to create a DNA template. Rosalind Franklin managed to photograph a DNA molecule.

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