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vlada-n [284]
3 years ago
9

Which statement provides an example of epigenetics A. Genetic mutations arising every other generation B. Selective breeding of

dogs to develop an ultra-aggressive strain C. Genetic mutations eliminating maternal behavior D. Mothering style affecting the developing brain
Biology
1 answer:
irina [24]3 years ago
6 0

Answer: d. mothering style affecting the developing brain

Explanation:

Epigenetics is the study of features or "phenotypes" which do not involve changes in the DNA sequence. Epigenetics is about how genes are expressed and used instead of the DNA sequence of the genes themselves.

The behaviour of a person's genes depends not only on the DNA sequence of the genes, but also on so-called epigenetic factors. Effects on genes from the external environment can affect disease, and some of these effects can be inherited in humans.

So, Mothering style which affects the brain development is an exampe of epigenetics which do not show any genetic feature.

Hence, the correct option is d.

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Name and describe 3 major characteristics of vascular plants?
inessss [21]

Answer:

Roots. Roots are simple tissues that are derived from the stem of the plant.

Xylem. The xylem is tissue that transports water throughout the plant.

Phloem. The phloem is the plant's food transportation system.

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8 0
3 years ago
Which layer of Earth has the lowest temperature, is entirely solid, and floats on top of fluid-like matter?
anyanavicka [17]
Crust maybe I'm not for sure.
6 0
3 years ago
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A Norovirus can be considered as a 30 nm in diameter spherical particle, made of protein and DNA·The Noroviruses are known to be
mariarad [96]

Answer:

For part A answer is,

=5.04 x 10^7 % which means that all the humans will be affected.

For Part B,

Time required is = 529.649 Years seconds.

Explanation:

See attachment for detailed explanation.

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8 0
3 years ago
Many bacteria, including E. coli, are capable of growing under both anaerobic and aerobic conditions. Some mutations are introdu
Sloan [31]

Answer:

Due to inability to survive in aerobic condition.

Explanation:

The strain dies when exposed to a normal laboratory atmosphere instead of nitrogen gas atmosphere because the mutation causes change in the capability of the strain to survive in the aerobic conditions. This mutation inactivate several enzymes which is also responsible for their capabilities of surviving under both anaerobic and aerobic environment so that's why the strain dies when exposed to normal atmosphere..

5 0
3 years ago
HELP ASAP I WILL GIVE BRAINLIST
adelina 88 [10]

Answer:

1) CO₂

2) 0.2551 g

Explanation:

The balanced reactions are:

CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

MgCO₃ + 2HCl → MgCl₂ + H₂O + CO₂

1) The gas produced is CO₂.

2) Calculate mass of CaCO₃:

(0.5236 g) (0.4230) = 0.2215 g CaCO₃

Convert to moles:

(0.2215 g CaCO₃) (1 mol / 100.1 g) = 0.002213 mol CaCO₃

Find moles of CaCO₃:

(0.002213 mol CaCO₃) (1 mol CO₂ / mol CaCO₃) = 0.002213 mol CO₂

Convert to mass:

(0.002213 mol CO₂) (44.01 g / mol) = 0.09738 g CO₂

Calculate mass of MgCO₃:

(0.5236 g) (0.5770) = 0.3021 g MgCO₃

Convert to moles:

(0.3021 g MgCO₃) (1 mol / 84.31 g) = 0.003583 mol MgCO₃

Find moles of MgCO₃:

(0.003583 mol MgCO₃) (1 mol CO₂ / mol MgCO₃) = 0.003583 mol CO₂

Convert to mass:

(0.003583 mol CO₂) (44.01 g / mol) = 0.1577 g CO₂

Total mass of CO₂:

0.09738 g CO₂ + 0.1577 g CO₂ = 0.2551 g CO₂

8 0
3 years ago
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