He is describing
Acceleration
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Answer:
a. MicroRNAs (miRNAs) bind to complementary sequences in mRNA and block its translation.
b. Piwi-associated RNAs (piRNAs) reestablish appropriate methylation patterns in the genome during gamete formation.
Explanation:
MicroRNAs
These are the small non-coding RNA molecule. These RNA consist of about 22 nucleotides. MicroRNAs are found in animals, plants and some viruses,
MiRNAs function
MicroRNAs also represented as miRNA function through base-pairing with complementary sequences of mRNA molecules. Due to this base pairing it functions as RNA silencing and regulation of gene expression.
Piwi-interacting RNA
piRNA expressed in animal cell. piRNA are the small non-coding RNA molecules which form RNA-protein complexes.
Piwi-interacting RNA Function:
Function of these complexes are epigenetic and post-transcriptional silencing of transposons.
Small interfering RNA :
siRNA molecules are the small pieces of double-stranded (ds) RNA. There length is about 21 nucleotides long. siRNA have 3' (3 prime) overhangs
Small interfering RNA Function:
siRNA overhangs are used to "interfere" protein translation. They perform this function by binding and degradation of mRNA at specific sequences
Answer:
b. Lizard and salamander
Explanation:
Both Lizard and salamander are closely related species because of their body structure and appearance. Both Lizard and salamander have similar shape and structure but belongs to different group. Lizard belongs to reptiles whereas salamander belongs to amphibian family. Both Lizard and salamander are vertebrates, cold blooded animals, carnivorous, has a tail and four legs. So we can conclude that both Lizard and salamander are closely related to each other.
The answer is:
TO MAKE FOOD
I hope im right
In the first spring after the formation of Surtsey, seeds and other plant parts were found washed up on the newly formed shore.
