3 years ago

Which mammal does not give live birth whale sea cow duck-billed platypus kangaroo dog

Biology

1 answer:

Crazy boy [7]3 years ago

4 0

Answer:

Duck-billed platypus

Explanation:

The duck-billed platypus is the only mammal that lays eggs.

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If all 5' and 3' splice sites were always used to process the pre-mRNA into mRNA, how many possible distinct mRNA sequences woul

lord [1]

The question lacks the diagram. The diagram has been attached below.

Answer:

Explanation:

Exons may be defined as the coding region of the RNA whereas introns are the non coding region of the RNA. The introns must be removed out from the RNA to makes it functional molecule.

The splicing of the given molecule results in the formation of single mRNA. The 1 splicing of the introns remove intron A whereas the second splicing results in the removal of intron B. The functional mRNA consists of the mRNA with exon 1,2 and 3.

Thus, the answer is 1.