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.
The girl is suffering from osteopenia.
The osteopenia is a condition, in which the bone mass of the person is significantly reduced. High amount of training and less intake of fats may cause a decrease in the hormone estrogen in young girls. this decrease in the hormone may lead to the irregular periods as well as decrease in bone mass, which eventually causes osteopenia. the osteopenia is a precursor of the osteoporosis, the osteopenia later, if untreated causes a further decrease in bone mass and porous bone (osteoporosis).
The denser plate
Explanation:
When two plates forms a subduction zone, the denser plate will subduct and dive into the underlying mantle below.
Subduction zone occurs along a convergent margin when two plates of different densities collides.
- When two plates of different densities collides, the denser plates subduct.
- This is because the density of the mantle below is less than its own density.
- Most times, oceanic plates usually subduct during plate convergence.
- Oceanic plates are denser compared to continental plates.
learn more:
Continental crust brainly.com/question/10537829
#learnwithBrainly
