Answer:
I think its B because An insertion changes the number of DNA bases in a gene by adding a piece of DNA. As a result, the protein made by the gene may not function properly. But it could be C because Missense mutation is a change in one DNA base pair that results in the substitution of one amino acid for another in the protein made by a gene.
It would be easier to identify the specimens because it is more hands on than the illistrations
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:
extinction of species
Explanation:
dinosaurs extincted of species long long time ago
Answer:
The correct answer would be "net formation by fibrin threads"
.
Hemophilia is an X-linked recessive disorder in which a person is not able to produce clotting factors VIII (hemophilia A) or IX (hemophilia B).
These clotting factors are involved in the cascade of coagulation process which takes place after the formation of a platelet plug.
These clotting factors help in the conversion of fibrinogen (soluble protein) into insoluble fibrin which stabilizes the platelet plug and ensures that the wall of the vessel can be healed properly.