Answer: Cytoskeleton
Explanation: The cytoskeleton is the web of proteins in the cytoplasm. -It acts as a muscle and a skeleton. -It keeps the cell membrane from collapsing.
Answer:
The correct answer is: 25 %
Explanation:
According to Mandel's law of inheritance, the dominant allele masks the expression of the recessive allele if present together. If a couple has 3 children with brown eyes. In a monohybrid cross, the ideal phenotypic ratio of the offsprings is 3: 1 or in other words, the dominant character chances to appear is 75% in phenotype.
So, by the law of dominance of monohybrid cross the chances of the fourth child to develop blue eyes is 25%.
Thus, the correct answer is : 25 %.
Answer:
The correct option will be Option B (study only physical aspect of primates).
Explanation:
- The significant components of that same endangered as well as surviving primates are analyzed by a primatologist. Also, the primates come to terms with either the molecular and physiological elements.
- A primer broader knows a great deal about everything from the bones of the primates. We also integrated depth of understanding of both biologizes including primate behavior.
The other choices don't apply to the specified scenario. So option B will be the perfect option for b.
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
