Biology, 21.11.2019 17:31 Gennn43

Which is true regarding all x-linked disorders?
group of answer choices

they are caused by mutations of the x chromosome

they are linked to an unknown chromosome

they are disorders that affect only women

they result in a longer lifespan

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Answer from: terrybrown5391

They are caused by mutation of the X chromosome.

Explanation:

In an XY-chromosomal system of sex determination, Both X and Y- chromosomes are Sex chromosome.Genes on sex chromosome are called sex linked genes.Sex linked genes are referred to as X-linked while Y-linked genes are the ones located only on the Y-chromosome.The genes located in on Y chromosome are holandric.Human females are homozygous for X chromosome while Human males are hemizygous i.e. they have only one X-chromosome and another Y chromosome.Disorders caused due to the mutation in the X chromosome are called X- linked disorders. Some examples are Hemophilia, Fragile X-syndrome etc.Sex lionked disorders can be X-linked Dominant disorder or X- linked Recessive disorder.The Dominant disorders are present in every generation, and affected males come from affected mothers. Daughters of affected fathers are always affected but sons of such father are not affected.The recessive disorders are more common in Males and these males come from affected mothers or carrier mothers. The affected females come from affected father and an affected or carrier mother.

Answer from: Quest

your answer should be c) enjoy!

Answer from: Quest

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."

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Which is true regarding all x-linked disorders?
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