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Mama L [17]
3 years ago
9

The diagram provided shows the carbon and nitrogen flow through a man-made mussel bed in the ocean. What evidence would support

the law of conservation of mass for this ecosystem?
A. A The amount of carbon and nitrogen removed during harvest equals the amount seeded as biomass.
B. B Carbon and nitrogen enter and leave the ecosystem only through man-made processes.
C. C The mass of scavengers, decomposers, and feces equals the mass absorbed from phytoplankton and detritus.
D. D The total amount of carbon and nitrogen entering the ecosystem equals the total amount leaving the ecosystem.

Biology
1 answer:
yKpoI14uk [10]3 years ago
3 0

Answer:

c

Explanation:

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A woman, S.R., had a maternal grandfather with hemophilia A (OMIM 306700), an X-linked recessive condition that reduces blood cl
Sidana [21]

Answer:

Hemophilia is a x-linked recessive inherited bleeding  disorder. in this disease blood does not clot properly due to the decreased level of blood clotting factor VIII (8) or factor IX (9).

In x-linked recessive condition, the disease is transmitted from father (affected male) to his daughter and mother (affected female) to her son and skip of generation getting affected is also occurs.

  • there will be 50% chance of her (S.R.) each son to be affected with hemophilia.

Explanation:

Hemophilia is caused due to mutation of one gene which is responsible for the making of proteins of  blood coagulation factor viii or ix. the affected person bleeds continuously from any injury and that can cause serious issues.

here,

grandfather of s.r is affected (xₐy) and grandmother is normal (xx) will produce

                                                   ↓

 s.r's mother who is a carrier (xₐx) [as xₐy and xx will produce 100% carrier xₐx daughter]

                                                    ↓

s.r's mother is a carrier (xₐx) but her father is normal (xy) will produce,

                                                   ↓

s.r who has 50% chance of being carrier (xₐx) and 50% chance of being normal (xx) [as she is the only child] and she has a normal (xy) partner, they will give,

                                                     ↓

  1. if s.r is a carrier (xₐx) then one of her son will be affected (xₐy)   [as xₐx and xy =xₐy]
  2. if s.r is normal (xx) then her son will be normal (xy) [as xx and xy will give xy]

here,<u> 50% chance of her son to be affected with hemophilia</u> [as S.R of being affected is more considerable].

8 0
4 years ago
A male giant panda has 42 chromosomes in its skin cells. this represents the
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Answer:

The chromosome number of the somatic cells.

Explanation:

The body mainly consist of two types of cell known as somatic cells and germ cells. The somatic cells divide by the process of mitosis whereas germ cells generally divide by the process of meiosis.

The skin cells of the giant panda has 42 chromosomes. The skin cells are included in the category of somatic cells. The skin cells are diploid in nature and divides by the process of mitosis only. These cells remains diploid after the mitosis process.

Thus, the chromosome number of the somatic cells.

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