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Alexandra [31]
2 years ago
14

Chromatin can be altered in a number of ways, such as histone modification and DNA methylation. When are such alterations consid

ered to be epigenetic
Biology
1 answer:
Ratling [72]2 years ago
6 0

Epigenetic changes are those which do not involve alterations in the DNA sequence. These are caused due to interaction of the genome with the environment.

<h3>When are alterations epigenetic?</h3>
  • Epigenetic modifications or tags include DNA methylation and histone modification.
  • These changes alter DNA accessibility and chromatin structure thus regulating gene expression.
  • These are the reversible, heritable changes which do not change your DNA sequence, but they can change how your body reads a DNA sequence.
  • These are necessary for the normal development of organisms.
  • Stable, long-term epigenetic modifications involve DNA methylation.
  • Flexible, short-term changes involve histone modifications, such as methylation and acetylation.

Learn more about epigenetic changes here:

brainly.com/question/25660175

#SPJ4

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if the ratio of the ages of kisii and esinam is 3:5 and that of Esinam and Larry is 3:5 and the sum of the ages of all three is
larisa [96]

Answer:

The age difference between the oldest and the youngest is 48.

Explanation:

Given the following data;

The ratio of the ages of Kisii (K) and Esinam (E) is 3:5.

The ratio of the ages of Esinam (E) and Larry (L) is 3:5.

The sum of the ages of all three is 147.

Since the age of Esinam is common in both ratios, we find the lowest common multiple (LCM);

LCM of 3,5 = 15.

Hence, the ratio of the three ages is now;

K:E:L = 9:15:25

Let their ages be denoted by x;

K:E:L = 9x:15x:25x

The sum of all three ages is;

9x + 15x + 25x = 147

49x = 147

x = 147/49

x = 3.

To find the age difference between the oldest and the youngest;

The oldest is Esinam = 25x

The youngest is Kisii = 9x

Therefore, 25x - 9x = 16x

Substituting the value of x, we have;

x = 3; 16x = 16(3) = 48.

The age difference between the oldest and the youngest is 48.

6 0
3 years ago
Why is gmo modification different for plants and animals
morpeh [17]

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Which of the following best describes a carbohydrate?
Alex_Xolod [135]

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Explanation:

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3 years ago
Hello(: I need some help what is an <br><br> (Allele)
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Answer:

An allele is one of two, or more, forms of a given gene variant. For example, the ABO blood grouping is controlled by the ABO gene, which has six common alleles. Nearly every living human's phenotype for the ABO gene is some combination of just these six alleles.

Explanation:

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Answer:

B. Hardness

Explanation:

Physical properties of a substance is defined as the properties which can be observed or measured without changing the composition of matter.

Physical properties include odor, appearance, color, texture, boiling point, melting point and many others.

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