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Helen [10]
3 years ago
13

How do scientists know that humans originated in Africa?

Biology
1 answer:
exis [7]3 years ago
4 0
The oldest bones of human decent were found in Africa
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A gene contains the base sequence GTA TAG. Give one example of a silent point mutation on this gene. Explain why it would be sil
Tcecarenko [31]

Answer: Has The Sequence Of GTC.

Explanation: ThAnk yOu VeRy MUch.

6 0
2 years ago
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Cells are divided into which two major groups?
lapo4ka [179]

According to the cell theory, the cell is the basic unit of life. All living organisms are composed of one or more cells. Based on the organization of their cellular structures, all living cells can be divided into two groups: prokaryotic and eukaryotic (also spelled procaryotic and eucaryotic).

6 0
3 years ago
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Aflatoxin is:_________
Nookie1986 [14]

Answer:

E) a natural mutagen.

Explanation:

Aflatoxin is a toxin byproduct produced by the fungi especially Aspergillus molds which grows attached to the roots of various crops like the peanuts, wheat and many others.

The aflatoxin is considered a carcinogen and a mutagen as it causes certain changes in the structure of DNA.  The aflatoxin mainly affects the liver and causes a mutation in the genes of the liver and since the aflatoxin is produced naturally by the molds, therefore, is considered a natural mutagen.

Thus, option-E is correct.

7 0
3 years ago
C.J. Pascoe writes that which queer theorist challenges that gender is natural by claiming that gender is performed through "a s
andrew-mc [135]

Answer:

The queer theorist goes by Judith Butler.

Explanation:

Judith Butler remains one of the critical writers and influentials in the field of Queer Studies. In his book, Gender Trouble: Feminism and subversion of identity, and several of his writings, Butler challenges that gender is natural by claiming that gender is performed through a set of repeated actions within a highly rigid regulatory frame that congeal over time to produce the appearance of substance of a natural sort of being.

With this foremost interventionism, Butler lays the foundation of providing requisite perspective into gender issues, feminism, and other controversial gender specific issues - gay, homosexuality, and et al.

7 0
3 years ago
What glues together molecules in adhesion and cohesion?
V125BC [204]

Answer:

The water molecules property’s called polarity

Explanation:

6 0
3 years ago
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