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NARA [144]
3 years ago
11

in humans, a combination of XX chromosomes results in a female zygote and that of XY result in a male zygotes. From whom does th

e a male zygotes inherit an X chromosome
Biology
1 answer:
devlian [24]3 years ago
6 0
The answer is: from mother

In a human diploid somatic cell (2n), there are<span> in total 46 chromosomes</span> - 22 autosomal chromosomes present in two copies and 1 pair of sex chromosomes. This means there are 23 pairs of chromosomes. In males, there is one X and one Y chromosome (XY) while in females, there are two XX chromosomes (XY).
During the formation of gametes, a female could give only X chromosomes, so gametes from the mother contain one X chromosome. But, a male could give X or Y chromosome, so gametes from the father contain either X or Y chromosome.
Female gamete and male gamete fuse to form a zygote. Male zygote must contain both X and Y chromosome. It inherits Y chromosome only from the father, so X chromosome must be inherited from the mother.
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irakobra [83]

Explanation:

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Dynasties in Chinese history, or Chinese dynasties, were hereditary monarchical regimes that ruled over China during much of its history. From the inauguration of dynastic rule by Yu the Great in circa 2070 BC to the abdication of the Xuantong Emperor on 12 February 1912 in the wake of the Xinhai Revolution, China was ruled by a series of successive dynasties. Dynasties of China were not limited to those established by ethnic Han—the dominant Chinese ethnic group—and its predecessor, the Huaxia tribal confederation, but also included those founded by non-Han peoples.

Dividing Chinese history into periods ruled by dynasties is a common method of periodization utilized by scholars. Accordingly, a dynasty may be used to delimit the era during which a family reigned, as well as to describe events, trends, personalities, artistic compositions, and artifacts of that period.[8] For example, porcelain made during the Ming dynasty may be referred to as "Ming porcelain".The word "dynasty" is usually omitted when making such adjectival references.

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5 0
3 years ago
The interaction between which protein and ion initiates muscle coupling?
labwork [276]

Answer:

Troponin and calcium ions.

Explanation:

Troponin is a component of thin filament along with tropomyosin and actin. It is a protein complex to which calcium binds and start the production of muscular force.

Calcium also playing a very important role in muscle contractions, it binds with troponin and helping to move tropomyosin.

When calcium ion attached to troponin, then conformational changes occurs in troponin shape and moves which allow tropomyosin going away from its inhibitory position from the myosin-binding sites on actin. After this, the energized myosin head starts binding to the actin molecules and starts the cross bridge cycle, which helping in shortening the muscle's fiber.

3 0
3 years ago
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svetoff [14.1K]

Answer:

it is true

Explanation:

6 0
2 years ago
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Citrus2011 [14]

Answer:

I think True

Explanation:

You can refer to it for more information:

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7 0
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