Answer:
C) Through genomic imprinting, methylation regulates expression of the paternal copy of the gene in the brain.
Explanation:
The pattern of gene expression wherein either paternal or maternal gene is expressed in specific cells while the other one is prevented from expression is known as genomic imprinting.
In the given example, the maternal copy of the gene on chromosome 15 is expressed in brain cells while its paternal copy is not expressed in these cells. Hence, the pattern of expression of this gene is regulated through genome imprinting. One of the mechanism is methylation of cytidine residues of CpG islands of the DNA that are more frequently present within promoters of the genes.
When the cytidine residues of these sequences are methylated into 5-methylcytidine, the transcription factors do not bind to these promoters preventing the expression of these genes.
Hence, methylation of cytidine residue in CpG islands of the promoters of the gene present on chromosome 15 could have silenced its expression in brain cells.
A. Alleles lineup independently of the other alleles
Answer:
I have absolutely no clue
The cerebellum which is a part of the brain would be responsible for the motor control,sensory perception,human movement and coordination. If there is then a damage the person may have problems in coordination as well as the senses would be loss.
Temperature, sunlight and water are all examples of the abiotic components of the ecosystem.
The ecosystem is the interaction and dynamic interdependent exchange of the biotic and abiotic factors of the environment. The biotic factors are the life or living organisms that live in the said environment. While the abiotic factors are those for example, soil, water, wind, air, minerals and etc
