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2 years ago

Which of the following statements is correct relative to solar cheilosis (SC)? RSE PDFS

Biology

1 answer:

Kay [80]2 years ago

8 0

Answer:

The correct answer is "all of the above".

Explanation:

The missing options of this question are:

A. The major etiologic factor associated with SC is ultraviolet radiation, principally UV-B.

B. Factors predisposing to SC include skin phenotype, age, male sex, outdoor occupation, rural living, and host immune status.

C. AK and SC serve as clinical dose-meters for chronic UVR exposure.

D. All of the above.

The correct answer is option D. "All of the above".

Solar cheilosis (SC) is a type of precancer of the lower lip, induced by ultraviolet light exposure, particularly by the exposure of UV-B from sunlight. However, UV-B exposure is not the only cause of SC, there are different factor that predispose to the development of this disease, including skin phenotype, age, male sex, outdoor occupation, rural living, and host immune status. Particularly because people with an outdoor occupation is more expose to sunlight and people with an detrimental immunological condition cannot fight SC as easy as a healthy person. According to the scientific article "Epidemiology of actinic keratoses and squamous cell carcinoma" by Salasche SJ., Actinic keratosis (AK) and SC serve as clinical dose-meters for chronic UVR exposure

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Answer:

Recessive phenotype plant

Explanation:

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If our test plant is homozygous dominant, it will pass one dominant allele to the next generation and all the offspring would have dominant phenotype. If our test plant is heterozygous dominant it will pass one dominant allele to half of the offspring and one recessive allele to another half so 50% of next generation will have dominant phenotype and other 50% will have recessive phenotype.

Hence by test cross (cross with recessive phenotype plant) it is possible to determine the genotype of the uncharacterized pea plant.

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2 years ago

Which statements describe freshwater sources? Check all that apply.

vekshin1

"Rainwater can replace or replenish freshwater sources" and "precipitation, such as rainwater, is a source of freshwater on Earth" statements describe freshwater sources

<u>Explanation:</u>

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