Keratins are structural proteins in skin, hair, and fingernails. One gene, called KRT10, is located on the 17th paired chromosome in humans. It produces a keratin that strengthens skin cells. Researchers have identified several mutations that can lead to rough, damaged, blistering skin because the keratins are not as strong as normal. Each mutation changes a specific amino acid at a particular location in the protein, and so is an example of a(n) mutation.
A. missense
B. duplication
C. insertion
D. nonsense
E. frameshift
A. missense
You might also like to view...
As a population declines in size, what would you predict? Check all that apply.
_____ Loss of genetic variation. _____ More individuals with heterozygote advantage. _____ Deleterious alleles can become fixed due to chance. _____ Homozygosity within individuals in the population will decline. _____ The few remaining individuals will be tough, healthy and fertile. _____ If the environment changes, the population will adapt quickly. Additional: Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about population size and genetic diversity? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which species is considered to be the most ancient?
A. Homo erectus B. Australopithecus afarensis C. Australopithecus sediba D. Homo sapiens E. Sahelanthropus tchadensis
One of the ways that two species can be compared, and information about the genetic basis of human diseases extracted, is by using their sequenced genomes and
A. exchanging genomic information between them. B. comparing expression of genes via microarrays. C. looking at the allelic differences using STS localization. D. investigating the intron formation using PCR.
What two main factors are responsible for the asymmetry in the coevolutionary arms race between microbial pathogens and their multicellular hosts?
What will be an ideal response?