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Maurinko [17]
3 years ago
12

Which of the following statements is generally true of aneuploidies in newborns? a. An aneuploidy resulting in the deletion of a

chromosome segment is less serious than a duplication. b. Human aneuploidy usually conveys an adaptive advantage in humans. c. A monosomy is more frequent than a trisomy. d. Monosomy X is the only viable monosomy known to occur in humans.
Biology
1 answer:
Novay_Z [31]3 years ago
4 0

Answer:

d. Monosomy X is the only viable monosomy known to occur in humans.

Explanation:

Human have 22 pair of homologous chromosomoses and an extra pair of sex chromosomes. While in males  the sex  chromosomes  are X and  Y , females have two chromosomes X . Anyway, in normal conditions the total number of chromosomomes that humans have in their cells is 46 (23 pair of chromosomes).  

Aneuploidy is a biological condition where an individual have an abnormal number of chromosomes in their cells.  In humans for examples, this would be a human having more or less than 46 chromosomes.

The Turner syndrome also called  monosomy X is an aneuploidy  where  one of the X chromosomes is missing in a female.  Although under constant supervision, people with Turner syndrome have viable healthy lives. However this is the only monosomy that occur in humans that is compatible with life.  

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sukhopar [10]

Answer:

A

Explanation:

The thrifty gene hypothesis postulates that due to dietary scarcity during human evolution, people are prone to obesity by storing energy as fat, an ability to take advantage of rare periods of abundance  and this is advantageous during times of food availability. individuals with greater adipose reserves would more likely survive famine. This tendency to store fat could lead to obesity.

FTO is an enzyme that is encoded in humans by FTO gene located on chromosome 16. Increase in this enzyme is associated with the regulation of energy intake but not feeding reward. Also, the set point theory indicates that bodies are meant to stay within a narrow weight range but it is susceptible to chnage overtime.

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3 years ago
Where is long-wavelength radiation created?
Ivahew [28]

On the earth surface

Explanation:

The long-wavelength radiation is created on the earth surface when electromagnetic radiation is re-emitted.

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  • When they interact with materials on the earth, they are radiated back as long-wavelength radiation that usually causes heat.
  • Ultraviolet rays and other high energy waves are emitted from the sun because it is a very hot body.
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  • Earth is cooler than the sun
  • When some of the short waves for example, the ultraviolet rays gets to the surface, it is absorbed and re-radiated back.
  • When the short waves are absorbed, they lose some of their their energy to the earth surface.
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  • The hotter a body is, the more energetic the radiation it releases.

learn more:

Electromagnetic radiation brainly.com/question/6818046

#learnwithBrainly

4 0
3 years ago
Why do conservationists sometimes purposely set a forest fire?
Oxana [17]
Conservationists occasionally light forests on fire to control wild fires. By occasionally burning material (like leaves, branches, etc), those materials cannot build up and cause large and uncontrollable fires later.
4 0
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Explain how the special properties of water make it essential for life on Earth.
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Answer:

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Explanation:

3 0
3 years ago
Name a classes of vertebrates with homeothermic animals.​
igomit [66]

Answer:

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Explanation:

hope it helps

7 0
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