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emmainna [20.7K]
4 years ago
13

When did virus evolve?

Biology
1 answer:
MatroZZZ [7]4 years ago
6 0
Viruses evolve from bits of DNA
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Please help me I really need the answers!!!!!
SpyIntel [72]

Answer:

1. GUG CAC CUG ACU

2. Val-his-leu-thr

Please talk to me if you don't understand! I can try to help you get this, because I understand it just looks like a bunch of random letters but I promise it's easy.

8 0
3 years ago
In 2017, Holen and colleagues announced the discovery of a 130,000-year-old site in California that they claimed contained a mas
Nostrana [21]

Answer:

Because humans has not arrived until 20,000 years ago.

Explanation:

The genus homo has been taken to the emergence with the  Homo habilis. Homo sapiens has been emerged around 300,000 to 200,000 years ago.

Holen and colleagues in 2017 discovered 130,000-year-old site in California that contain a  a mastodon that had been butchered by humans. Some scientists  express skepticism because it has been believed that only humans have occupied North America. The Homo sapiens has not arrived until 20,000 years ago.

7 0
4 years ago
A female rabbit heterozygous at two genes (named A and B) is test-crossed with a male rabbit. Their progeny include 442 A/a;B/b,
natta225 [31]

Answer:

The genes are linked and 10 mu apart.

Explanation:

A female AaBb rabbit is test crossed with a male rabbit (aabb). The male can only produce<em> ab</em> gametes (all the progeny will have ab on one of the homologous chromosomes).

If the genes assorted independently, the female would produce 4 types of gametes with the same frequency: 1/4 AB, 1/4 Ab, 1/4 aB and 1/4 ab.

However, the observed AB and ab gametes were much more frequent than Ab and aB, which means that the genes are linked and alleles on the same chromosome do not assort independently during meiosis.

Recombination is a rare event, so the most abundant gametes are the parentals. That is how we know that the mother had the AB/ab genotype. The recombinant gametes therefore are Ab and aB.

Distance (mu) = # Recombinants × 100/ Total progeny

Distance = (54 + 46) × 100/ 1000

Distance =  100 × 100/1000

Distance = 10 mu

6 0
4 years ago
An ecologist can make a good guess on the type of biome if he knows what type of _____ are/is in the area.
Nitella [24]
<span>An ecologist can make a good guess on the type of biome if he knows what type of *plants* are in the area.</span>
3 0
3 years ago
Read 2 more answers
For non-stafford act incidents, who activates the appropriate coordinating structures?
Marizza181 [45]

The body that activates appropriate coordinating structures is department with primary legal authority.

The non-stafford act incidents are those incidents in which the recovery requirements exceeds the capacity of the individual and community but not the state.

This act is activated by department with primary legal authority coordinating structures appropriate to that authority.

The non-stafford act plans strategy for recovery through:

  • Supporting the development of local Business Recovery Plans for individual impacted businesses,
  • Develop a State recovery strategy to ensure the unified coordination of State and
  • Federal agencies supporting impacted jurisdictions.

The non-Stafford act assess the needs of the individuals and communities for federal technical assistance.

Learn more here:

brainly.com/question/14336953

5 0
3 years ago
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