<h2>c) option is correct</h2>
Explanation:
Melanin causes skin pigmentation, lowers the skin's ability to make vitamin D in response to sunlight exposure and some studies show that older adults with darker skin are at high risk of vitamin D deficiency
If there is lighter skin tones of people, it implies that the amount of Vitamin D is more in those people and skin of those people have the ability to process vitamin D from the sun
Answer:
recombination frequency = 4.5% or 4.5mu
Explanation:
to calculate the frequency of recombination between these genes
we have,
recombination frequency = [ number of recombinnants/total number of offsprings) x 100
total offspring = 88 + 103 + 6 + 3
total offspring = 200
Gl ra 88............................ parent
gl Ra 103.........................parent
Gl Ra 6..................................... recombinant
gl ra 3................................................ recombinant
recombination frequency = {6+3/88 + 103 + 6 + 3} x 100
recombination frequency = 9/200 x1oo
recombination frequency = 0.045 x 100
recombination frequency = 4.5% or 4.5mu
Answer:
these biomes has permanently frozen water in its soil is a tundra.
What do you realize approximately ecosystems: An ecosystem is a geographic area in which flowers, animals, and different organisms, in addition to climate and landscape, paint collectively to form a bubble of existence.
Ecosystems incorporate biotic or residing, components, as well as abiotic elements, or nonliving elements. Biotic factors include flowers, animals, and different organisms.
Ecosystems have lots of various dwelling organisms that interact with each differently. The living organisms in an environment may be divided into three categories: producers, consumers, and decomposers. they're all important elements of an atmosphere.
All ecosystems require strength from an outside source – that is usually the sun. An atmosphere ought to comprise manufacturers, customers, decomposers, and useless and inorganic count. All ecosystems require power from an external supply – that is generally the sun.
Learn more about Ecosystems here:
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