Two potential functions that eukaryotic cells perform to regulate transcription are DNA methylation: a process of epigenetics that participates in the regulation of the gene expression in two ways, directly impeding the union of the transcription factors, and indirectly propitiating the closed structure of the chromatin, and Histone acetylation, enzymes that acetylate conserved lysine residues in histones by transferring an acetyl group from an acetyl-CoA molecule, to form ε-N-acetyl lysine, is extensively associated with an open chromatin structure and therefore accessible to transcription factors, which increases gene expression.
Answer:
True
Explanation:
The stratum lucidium is a layer composed of the dead skin cells which appear transparent in the microscope. The stratum lucidium is made up of about five layers of dead cells and keratinocytes present between the stratum granulosum and stratum corneum.
The layer is visible in the palms, the sole of the feet and the fingertips of hands and the akin possess a higher number of Merkel cells with sensory receptors in the form of nerve ending which are specialized to sense the touch.
Thus, true is correct.
Cartilage is a type of supportive connective tissue with a relatively rigid but flexible matrix.
Connective tissue are tissues with usually more matrix than cell volume, often specialized to support, bind and protect organs. They are mostly located in tendons, ligaments, cartilage, bone and blood. they have various function such as; support, binding of organs, physical protection, immune protection, movement, storage, heat production and transport.
Answer:
1. 2 alleles, solid brown and spotted
2. 1 dominant, spotted, and one recessive, solid
3. Dominant: 16/24 Recessive: 8/24. Spotted- R, solid, r. There are 6 RR, 4 Rr and 2 rr.
4. It would slowly become more common and common. When a spotted and a solid pairs, its still most likely that the offspring will be spotted, however as most spotted die the number of spotted getting offsprings decrease.
5. No genetic variation, everyone in the population has that trait
Answer:D (it sounds about right)
