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11Alexandr11 [23.1K]
3 years ago
14

What are loops within orbits?

Biology
1 answer:
True [87]3 years ago
5 0

Answer:

precession

Explanation:

The orbit isn’t the simple ellipse, rather it is one that moves a little, loop after loop. This motion is called precession, and you may have heard about it when astronomers talk about the precession of the orbit of Mercury

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Which of the following is not a characteristic of a parenchyma cell?
AfilCa [17]
Thick rigid cell wall is not  characteristic of a parenchyma cell
3 0
3 years ago
In a population of 100 four o’clock plants, there are 50 red-flowered plants with genotype CRCR, 30 pink-flowered plants with ge
Misha Larkins [42]

Answer:

a- CRCR frequency = 0.5

b- CRCW frequency = 0.3

c- CWCW frequency = 0.2

d- CR frequency = 0.65

e- CW frequency =  0.35    

Explanation:

Due to technical problems, you will find the complete explanation in the attached files.

Download pdf
3 0
2 years ago
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
3 years ago
What factors can affect an organisms trait
Artemon [7]

Answer:

Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal's genes are expressed, which ultimately affects the animal's phenotype.

Explanation:

3 0
2 years ago
The modern synthesis refers to a. the combination of Mendelian and blending inheritance. b. the combination of modern genetics a
Ad libitum [116K]

Answer:

B. the combination of modern genetics and Darwinism.

Explanation:

The modern synthesis refers to the concept which combined the theory of inheritance by Mendel and theory of evolution by Charles Darwin. The theory also used the concept of Theory of germplasm.

The modern synthesis concept came in the early 20th century when the studies were going on Mendel's theory and the evolutionary aspects.  The concept led to the formation of new concepts like the macroevolution, microevolution and the evolution affected by mutation of genes.

Thus, Option-B is correct.

4 0
3 years ago
Read 2 more answers
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