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denis23 [38]
1 year ago
11

Briefly explain why only chromosomes of a homologous pair can have their alleles referred toas homozygous or heterozygous

Biology
1 answer:
tatuchka [14]1 year ago
6 0

This is due to the fact that only homologous chromosomes would have identical genes located at identical sites on those chromosomes. Otherwise, there would be no connection between the alleles of various genes.

Although the genes and loci of the two members of the homologous pair are similar, the alleles may vary.For instance, both allele possess the genes responsible for the attribute of eye colour. While the one has alleles for the blue-eye trait, other has alleles for the brown-eye trait. The homologous chromosomes are said to be heterozygous in this instance since the alleles are different.

On the other hand, when both alleles for a gene that codes for the blue-eye phenotype are present, it is said to be homozygous.

To learn more about homologous chromosomes click here

brainly.com/question/27258467

#SPJ4

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The neural pathway bringing temperature information from your left hand to the somatosensory cortex would have two synapses, wit
Westkost [7]

Answer:

The neural pathway bringing temperature information from your left hand to the somatosensory cortex would have two synapses, with the first being in the <u>spinal cord dorsal horn on the left side</u> and the second being in the <u>thalamus on the right side.</u>

Explanation:

The stimuli received by the external receptors must travel from the place where they are produced to the association centers located in the central nervous system, where the information is processed.

In the case of the sensory nerves, which conduct the temperature-related information from the left hand, it happens that:

  • They make their first synapse in the posterior horn of the spinal cord, responsible for receiving nerve impulses of sensitivity, on the same side as the stimulus (left).
  • The second synapse occurs in the thalamus, an organ of the central nervous system that is responsible for receiving information related to temperature. As the sensory and motor pathways are crossed, the portion of the thalamus that receives the information is the right one.

One of the consequences of the crossing of the sensory pathways is that everything related to one side of the body is processed on the opposite side of the somatosensory cortex.

Learn more:

Somatosensory cortex brainly.com/question/8340880

5 0
2 years ago
In the stratosphere, ozone interacts with ultraviolet (UV) rays from the Sun. Ozone particles, once struck with UV rays, gain en
Simora [160]

Answer:

Explanation:

simple the more ozone in the atmosphere means more uv absorption the higher up you go the amount of ozone increases and the temperature increases

3 0
2 years ago
3. Paul's travels between the United States and Africa have been shocking because of the unexpected contrasts and similarities b
lana [24]

Answer:

In general, it is possible to affirm that in areas where there is malnutrition there are high deficits in all the essential vitamins for humans. A characteristic poor diet in these countries occasionally lacks vitamins and with this malnutrition. However, the reports mainly focus on deficits of vitamin A and D because there are more investigations. Vitamins are essential substances for the body and its function and cannot be synthesized by the same body but must be ingested from food. Vitamin deficiency is considered serious because it causes blindness and even death.

3 0
3 years ago
Which of the following best explains why the latitude of a region influences its climate?
Rudik [331]

Answer:

"The latitude of a region determines how much sunlight the area receives" this statement says about why the latitude of a region influences its climate.

Explanation:

The latitude determines the sunlight of the area receives because, the more the latitude the sharper will be angle of the sun's rays which will reach the surface. Means that the rays of the sun are being spread over the broader area. Hence, More the latitude receive will be the less than the lower latitude areas located nearer to the equator. As, we know the sun's ray first strikes over the Earth's surface which is near the equator as these places receive direct solar radiation. At greater latitude the solar radiations gets spread in more area and hence the temperature also reduces.

7 0
3 years ago
Sasha uses a basketball and a tennis ball to represent two astronomical bodies based on their sizes.
sergeinik [125]

Answer:

I believe the answer is C.  

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This is because the basketball is the bigger object here so that should represent something bigger like the solar system.  Then the tennis ball would represent earth because it is the smaller object here.

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