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Anvisha [2.4K]
2 years ago
9

What was Lamarck's Theory?

Biology
1 answer:
Phantasy [73]2 years ago
6 0
Lamarck<span> is best known for his </span>Theory<span> of Inheritance of Acquired Characteristics, first presented in 1801 . If an organism changes during life in order to adapt to its environment, those changes are passed on to its offspring.</span>
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What is one way that changes can occur in a dna sequence
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Answer:

Mutation. A mistake made while DNA copies which causes changes in DNA

Explanation:

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3 years ago
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Stem cells are important because _____.
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Stem cell are important because stem cells represent an exciting area in medicine because of their potential to regenerate and repair damage tissue .
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In humans, methylation of chromosomal DNA is a signal that often leads to
Ulleksa [173]

Answer:

The correct answer will be option-formation of heterochromatin

Explanation:

Methylation of DNA is the epigenetic mechanism which controls the expression of a gene by adding a methyl group to the cytosine bases in eukaryotic DNA.

The methylation of DNA converts the cytosine residues to the  5-methylcytosine catalysed by DNA methyltransferase enzyme. This results in the silencing of the gene and transcription get switched off.

Studies have shown that DNA methylation is involved in the formation and maintenance of the heterochromatin structure which is the condensed form of the chromatin in which transcription is switched off.

Thus, the formation of heterochromatin is the correct answer.

7 0
3 years ago
Which of the following is a nonrenewable resource?
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Oil

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3 years ago
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irina [24]

Answer:

Clay is not mined in Minnesota.

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  • Metallic minerals divided into ferrous mineral which contain iron and non ferrous minerals donot contain iron but it contain other metals like copper.
  • Metallic minerals contain iron ore,where as non ferrous minerals contain manganese,copper,nickel,platinum,titanium etc.
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7 0
2 years ago
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