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prohojiy [21]
3 years ago
14

Where do elements come from?

Biology
1 answer:
Andreyy893 years ago
6 0
When the universe was 3 minutes old, it had cooled enough for these protons and neutrons to combine into nuclei. This is known as the time of nucleosynthesis. Hydrogen<span>, </span>helium<span>, </span>lithium<span>, and </span>beryllium<span> were produced. Today, about 90% of the universe is still </span>hydrogen<span>. Your Welcome :)</span>
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If an organism has 4 pairs of chromosomes how many gametes can it produce
Volgvan
An organism with 4 pairs of chromosomes, in which each chromosome consists of 2 chromatids. Would produce 8 gametes.
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3 years ago
There are several different types of mutations possible in the base sequence of DNA. If a GGC (glycine) codon were changed to UG
olga_2 [115]

Answer: Point mutation

There are several different types of mutations possible in the base sequence of DNA. If a GGC (glycine) codon were changed to UGC (cysteine), it would be termed a point mutation.

Explanation:

Point mutation is caused when a nitrogenous base (purine or pyrimidine) is substituted by another base of the same or different class in a nucleotide. So, GGC (glycine) codon to UGC (cysteine) signifies the change of the first base - guanine to uracil.

Other types of mutation include insertion and deletion.

But in this case, point mutation is said to have occurred.

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4 years ago
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IgorLugansk [536]
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If a DNA sequence reads 3 – ACTTGC – 5, then what is the matching sequence on the opposing strand?
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