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valentina_108 [34]
3 years ago
13

​_____ is a genetic variation associated with characteristic facial appearance, learning disabilities, and physical abnormalitie

s such as heart valve disease.
Biology
2 answers:
attashe74 [19]3 years ago
6 0

Answer: Down syndrome

Explanation:

kap26 [50]3 years ago
3 0

Answer:

Down syndrome

Explanation:

Down syndrome is a genetic disorder that occurs when an abnormal cell division results in an extra copy of chromosome 21. <em>Some symptoms of this syndrome are distinct facial features (small ears, small head, flat face, etc.), short height and even heat defects.</em>

I hope you find this information useful and interesting! Good luck!

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How are the results of genetic drift similar to the results of gene flow?
Fynjy0 [20]
The answer is Both result in a change in allele frequencies in the affected population

Genetic drift is a change in the frequency of alleles in a population as a result of random sampling of organisms. I<span>magine you have two different alleles in the population responsible for red and white color of a flower. Their allele frequencies are 0.2 for white flowers and 0.8 for red flowers. After some change in the environment, only white flowers survive. They will reproduce, and in the population, there will be only white flowers. The population for these flowers will increase from 0.2 to 1.
Speaking of gene flow, it is not as dramatic and drastic as genetic drift, but still, it includes a transfer of alleles from one population to another, so there is expected a change in allele frequency.</span>

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RideAnS [48]
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Climate change, therefore, is a change in the typical or average weather of a region or city. This could be a change in a region's average annual rainfall, for example. Or it could be a change in a city's average temperature for a given month or season. Climate change is also a change in Earth's overall climate.

Hope this helps you:)
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