Answer:
95%
Explanation:
The complete question is as follows:
The lethal tumor dose is defined as the dose that will eradicate what percentage of the tumor yet preserve normal tissue?
a) 85%
b) 95%
c) 65%
d) 75%
- Radiation dose is used as a therapy of cancer as the radiation leads to the breakage of the DNA and hence, renders the cell incapable of growth and division.
- Lethal tumor dose is defined as the dose of radiation that is required for the production of complete eradication of tumor.
- The dosage of the radiation depends on the sensitivity of the target tissues to radiation along with the size of the tumor.
- The lethal tumor dose is defined as the dose that will eradicate 95% of the tumor however it would still preserve the normal tissue.
White petal color is recessive trait, meaning that its genotype is pp (homozygous recessive).
On the other hand, PP is homozygous dominant genotype resulting in purple petal color (phenotype).
Since the allele P is dominant over p, heterozygous genotype Pp will also result in purple color.
Hello. Giraffes with longer necks survive compared to those with shorter necks because of natural selection. Over time, natural selection favors the traits that would make a species thrive better in the environment. Giraffes with short necks won't have access to that much food compared to those with long necks thus they eventually died out.
ANSWER: natural selection.
This jet stream—the one that forms at the polar front—affects weather in the United States. ... This shift occurs because the entire hemisphere is cooler, so the boundary between the cold polar air and the warm southern air shifts south. As a result, the jet stream shifts toward the south in winter.
