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lana [24]
3 years ago
13

Which of the following cell structures can be found in prokaryotic cells?

Biology
1 answer:
Katena32 [7]3 years ago
7 0

Answer:

The correct answer is B. ribosomes.

Explanation:

Prokaryotic cells, like bacteria, are cells that do not have any organelles.  Unlike eukaryotic cells, they do not have a nucleus or other membrane-bound structures inside their cell membrane.  Therefore, prokaryotic cells do not have chloroplasts, mitochondria, or nuclei, but they do have ribosomes (as do eukaryotic cells) which are an important component of protein production in the cell.

Hope this helps!

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A randomly mating population of 100 dairy cattle contains a recessive allele that causes dwarfism. If there are 16 dwarf calves
hichkok12 [17]

Answer:

Frequency of heterozygous carriers of the allele in the entire herd is 0.48 i.e 48 out of 100

Explanation:

It is given that a recessive allele pair produces a dwarf cow.

Let this recessive allele be represented by "t" and the dominant allele for tall height trait in cows be "T".

Given

Total population of randomly mating cows = 100

Total number of dwarf calves in the population = 16

Frequency of genotype "tt" producing dwarf calves is represented as q^2 in HW equilibrium equation.

Here

q^ 2 = \frac{16}{100} \\q^2 = 0.16

Frequency of recessive allele is equal to "q"

q = \sqrt{0.16} \\q = 0.4

As per first equilibrium equation of HW,

p + q = 1\\p + 0.4 = 1\\p = 1-0.4\\p = 0.6

Frequency of genotype "TT" producing dwarf calves is represented as p^2 in HW equilibrium equation.

p^2 = 0.6^2 \\p^2 = 0.36

As per HW's second equilibrium equation

p^2 + q^2 + 2pq = 1\\

Substituting the given values in above equation, we get -

0.36 + 0.16 + 2pq = 1\\2pq = 1-0.16-0.36\\2pq = 0.48

Frequency of heterozygous carriers of the allele in the entire herd is 0.48 i.e 48 out of 100

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Homeostasis is the process of maintaining a cell's environment. This
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