A retrotranspon known as LINE1 is about 1000 base pairs in length and is present in the human genome in about 516,000 copies. Approximately what percentage of the human genome is accounted for by this transposon?a. 0.017%
b. 17%
c. 0.17%
d. 0.0017%
e. 1.7%

b. 17%

Explanation:

Let's begin by stating that the human genome possesses around 3,000 millions of base pairs.

Therefore, if this retrotransposon is around 1,000 base pair and possesses 516,000 copies, it will produce 516,000,000 of base pairs overall.

Let's consider,

516 millions

× 100

3000 millions

= 17.2% (approximately 17%)

it gives us a percentage of the human genome which is for this transposon.

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.

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