Lung cancer b. has an overall 5-year survival rate of 15 percent.
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Lung cancer is the leading cause of cancer death in the world. The studies have shown that the 5-year survival rate in the USA for lung cancer is about 15 %. In the past few decades, there has been some improvement in survival, but some have yet to be achieved.</span>
Answer:
A) Chromosomes are made of DNA
C) Alleles are the different forms of a gene that can exist
D) Chromosomes contain genes that control the inheritance of traits.
Explanation:
Chromosomes are long molecules of deoxyribonucleic acid (DNA) that contain part (or all) of the genetic material of an organism. Humans contain 46 chromosomes organized in 23 pairs of homologous chromosomes (22 pairs of autosomal chromosomes and one pair of sex chromosomes, X and Y). Moreover, a gene is a physical segment of a chromosome that contains the information to encode a protein. Alleles are different forms of a gene (i.e., gene variants) that may be caused by mutations or genetic recombination. Humans are diploid organisms (2N: 46), and therefore we have two copies of each gene (alleles), one on each homologous chromosome.
How
often an allele occurs in the gene pool is allele frequency.
<span>Allele
frequency defines how common an allele is in a population. It can be calculated
by counting how many times the allele appears in the population and then
dividing by the total number of copies of the gene.</span>
Grasslands are ecosystems covered by grasses. The ecosystem can be a newly formed or previously established type. The project is most likely about the climax community.
<h3>What is climax community?</h3>
The final or the last step of the ecological succession is called climax community, it remains unchanged till the conditions are stable and unaltered.
They are the communities of the flora and fauna that have attained equilibrium and does not undergo any extra changes. The organisms of the climax community adapt and interact with each other in a balanced way.
Therefore, option D. climax community is the most likely topic of the project.
Learn more about the climax community here:
brainly.com/question/1018506
The answer is the rain forest biome.
