Answer:
The answer is spongy mesophyll.
Explanation:
Between the upper and lower epidermis of a leave, you can find the so called mesophyll tissue which is rich in chloroplasts. There are two types of mesophyll tissue: the palisade and the spongy mesophyll. Whereas the cells of the palisade mesophyll are tightly packed, the cells of the spongy mesophyll are loosely packed.
The TYR, TRP2, and TRP1 genes are located next to each other on a single chromosome and are organized into an operon is most likely to be accurate.
The option a is correct.
Explanation:
The genes for the Tyrosinase, TRP2 and TRP1 are located on the same chromosome and are operons. These are operons because they are controlled by same transcription factors on mRNA.
Tyrosinase enzyme is important for the synthesis of melanin, eye pigments and hair colour. The synthesis of all these is completed in three distinct reactions catalysed by TRP1, TRP2 and Tyr genes. These work as operon and the protein product is almost 40% similar of the three genes.
The amount of melanin production depends on tyrosinase enzyme activity of all the three genes.
The genetic regulation is done by operons.
Answer:
separation of sister chromatids
Explanation:
In this
case, when Alicia is being tickled by her older sister, the divisions of
the nervous system which are responsible for receiving the signals from her
sister’s fingers are called somatosensory cortex and anterior
cingulated cortex nervous system.
When you are touched lightly, the effect of having that ticklish
sensation is caused by the analysis of two regions of the brain. For example,
when our brain analyses the pressure of the touch, this is the work of
the somatosensory cortex. On the other hand, as
soon as something touches your skin, the signal sent from the skin's sensory
receptors also passes through the anterior cingulated cortex.<span>This is
where the pleasant feelings are governed. </span>
