2 Transposable elements a. Aid in fixing and repairing DNA damage. D Are not pre

Question

2 Transposable elements a. Aid in fixing and repairing DNA damage. D Are not present in wildtype cells, but can be introduced and used in a lab setting. 2c. All of the above. None of the above. 25. Which of these would require signal transduction? Sound stimulation the transcription and translation of proteins involved in inner ear hair. Sugar stimulating the production of sugar degrading enzymes Both require signal transduction. a b. c. 26. Which of these diseases is the result of too many GpC islands that trigger too tight of DA packaging in a critical area of a chromosome? a. Hutchinson-Gilford. b Fragile X syndrome. C. IPEX d. HDAC's 27 True (bubble A) or False (bubble B): Mutations caused by uV light will favor mutations that cause changes to protect the cell from UV light 28. Which of these types of mutagens wouldn't be used directly in the production of a new DNA strand but could cause damage to an already existing nucleotide? a. Base modifying agent. b. Base analog. Tautomer. 9 Signal transduction: a., Relies on the uptake of an external signal molecule from the cell. b. Relies on the release of an internal signal molecule from the cell. O Relies on cell surface proteins changing shape.

Explanation / Answer

24) Transposable Elements:

transposable elements are short sequences of DNA that have the ability to move from one locations to other location in the genome and often make duplicate copies of themselves in this process. the process by which these sequences are copied and inserted into a new site in the genome called transposition. however, most of these elements move only very rarely. a transposable element is considered as selfish DNA, which is defined as any segment of DNA that replicates, but which is of no use to the host cell it habitats. defective selfish DNA, which is no longer capable of either moving or expressing its genes, termed as junk DNA. transposable elements are the moderately repeated DNA sequences interspersed at multiple sites throughout the genomes. genomes generally contain many varieties of transposable elements.

the correct answer is " d" . and you can write both "b" and "d" because DNA transposons are helpful devices to examine the regulatory genome, study embryonic improvement, distinguish qualities and pathways implicated in illness or pathogenesis of pathogens, and even add to quality treatment. In this audit, we will depict the idea of these components and examine late advances in this field of research, and in addition, our developing learning of the DNA transposons most broadly utilized as a part of these investigations.

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25) Hair cells are the sensory receptors of both the sound-related framework and the vestibular framework in the ears all things considered. Through mechanotransduction, hair cells distinguish development in their environment. Damage to these hair cells brings about diminished hearing affectability, and on the grounds that the internal ear hair cells can't recover, this harm is changeless.

Calcium ion convergence assumes an imperative part for the hair cells to adjust to the intensification of the signal. This enables people to disregard consistent sounds that are not anymore new and enable us to be intense to different changes in our encompassing. The key adjustment component originates from an engine protein myosin-1c that permits moderate adjustment, gives tension to sensitize transduction channels, and furthermore take part in "signal transduction mechanism".

the correct answer is "a".

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27) genome is not a static entity. it is subject to different types of heritable changes. a sudden and heritable change in the sequence of an organism's genome that gives rise to alternate forms of any gene is called mutation.

role of mutations:

it provides the raw material for genetic evolution. mutation results into the formation of alleles, without mutation, all genes would exist in only one form. and the organism would able to evolve and adapt to environmental changes.

the correct answer is " true"

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