@W#3Cancer s caused by a mutation in the regulatory parts of the cell, this causes cells to replicate out ofcontrol. In some cases, the likeliness of getting cancer is a heritable trait. Assume this trait varies fromhighly likely to have cancer to not likely to have cancer. For a population of Schnauzers (a type of dog),skin cancer more prevalent in old age, long after most of the breed has had offspring.Ia) What type of selection might be occurring here? |b) Choose a graph that represents the kind of selection that is occurring here and explain in words whyyou choose this graph (Solid line is the original population, dotted line is the population after selection):baно и иWIABc)To what degree would the trait have on Schnauzer's fitness if it is at risk of cancer only in old age?JUNI-MacBook ProaA&6E4R%5TYtvU*00F

Natural selection Natural selection is a process by which the organism is updated well to their…

I a) What type of selection might be occurring here? I b) Choose a graph that represents the kind of selection that is occurring here and explain in words why you choose this graph (Solid line is the original population, dotted line is the population after selection): ba каки A в с c)To what degree would the trait have on Schnauzer's fitness if it is at risk of cancer only in old age?

I a) What type of selection might be occurring here? I b) Choose a graph that represents the kind of selection that is occurring here and explain in words why you choose this graph (Solid line is the original population, dotted line is the population after selection): ba каки A в с c)To what degree would the trait have on Schnauzer's fitness if it is at risk of cancer only in old age?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter10: Cell Division And Mitosis

Section: Chapter Questions

Problem 2ITD

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. Neurofibromas are tumors of the skin that can arisewhen a skin cell that is originally NF1+/ NF1− losesthe NF1+ allele. This wild-type allele encodes a functional protein (called a tumor suppressor), while theNF1− allele encodes a nonfunctional protein.A patient of genotype NF1+ / NF1− has 20 independent tumors in different areas of the skin. Samplesare taken of normal, noncancerous cells from thispatient, as well as of cells from each of the 20 tumors.Extracts of these samples are analyzed by a techniquecalled gel electrophoresis that can detect variantforms of four different proteins (A, B, C, and D) allencoded by genes that lie on the same autosome asNF1. Each protein has a slow (S) and a fast (F) formthat are encoded by different alleles (for example, ASand AF). In the extract of normal tissue, slow and fastvariants of all four proteins are found. In the extractsof the tumors, 12 had only the fast variants of proteinsA and D but both the fast and slow variants of proteins B and…
Skin cancer carries a lifetime risk nearly equal to that of allother cancers combined. Following is a graph [modified fromK. H. Kraemer (1997). Proc. Natl. Acad. Sci. (USA) 94:11–14]depicting the age of onset of skin cancers in patients with orwithout XP, where the cumulative percentage of skin cancer is plotted against age. The non-XP curve is based on 29,757 cancerssurveyed by the National Cancer Institute, and the curverepresenting those with XP is based on 63 skin cancers from theXeroderma Pigmentosum Registry.
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