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Stels [109]
2 years ago
15

Genetic drift simulation: understanding evolution

Biology
1 answer:
sleet_krkn [62]2 years ago
8 0

Answer:

Genetic drift is a mechanism of evolution in which allele frequencies of a population change over generations due to chance (sampling error).

Genetic drift occurs in all populations of non-infinite size, but its effects are strongest in small populations.

Genetic drift may result in the loss of some alleles (including beneficial ones) and the fixation.

Genetic drift can have major effects when a population is sharply reduced in size by a natural disaster (bottleneck effect) or when a small group splits off from the main population to found a colony (founder effect).

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What design goal does the inclusion of helicopters, cars, and hand grenades demonstrate in contemporary Afghan carpets?
scoray [572]

Answer:

Option A

Explanation:

Options for the question are

  a)  pattern

   b)  directional forces

   c)  scale and proportion

   d)  emphasis and subordination

Solution -

The inclusion of shapes and design of tanks, grenades, helicopters etc. in the carpets of Afghans started around 19th century during the war time. These shapes were included mainly with two perspective a) either as an essential element of a landscape or b) as a icon in a pattern.  

Not only this, the Afghans carpet also depicts the shapes of world trade tower and the attack on it as a part of its design.  

Hence, option A is correct

5 0
3 years ago
What type of isotope undergoes radioactive decay?
kvv77 [185]

Answer:

one that has an unstable nucleus

Explanation:

An isotope is defined as a chemical variant  present in an atom with different number of neutron but same number of protons.

Radioactive decay is the sudden breakdown of an atomic nucleus allowing matter and radiation to be emitted from the nucleus. A radioisotope with unstable nuclei undergoes radioactive decay because they do not have adequate binding energy to keep the nucleus together. there are four  types of Alpha, Beta, Gamma Decay and Positron Emission.

Hence, the correct option is "one that has an unstable nucleus"

4 0
3 years ago
All you need to know is in the pic bellow
algol13

Answer:

D.

Explanation:

5 0
2 years ago
Read 2 more answers
Nuclear fusion is the combining of atomic nuclei to produce energy and new types of
galben [10]
Im not sure how to answer this since there were no choices given but I will answer by telling you what nuclear fusion is...

so basically nuclear fusion is the merging or combining of 2 isotopes, typically isotopes of hydrogen, under conditions of extreme temperature and pressure thus resulting in the release of massive amounts of energy. I think the answer to your question would be new types of electricity because the heat emitted from the reaction could be turned into electricity by using its steam. This is what happens in nuclear reactors  

i hop this answers your question 
3 0
3 years ago
What serves as a structure in a cell?
Sunny_sXe [5.5K]

Answer:

The cell membrane, or in plant cells, the cell wall

Explanation:

In a plant cell the cell wall helps maintain structure, and in animal cells, the cell membrane regulates what goes in and out of the cell and acts as a structure

8 0
3 years ago
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