The variation in eye color among people is an example of ___. A. genetic mutation B. environmental influence C. genetic inheritance D. natural selection 相关知识点: 试题来源: 解析 C。本题主要考查生物遗传变异知识。人眼睛颜色的不同主要是由遗传决定的,是遗传继承的例子。反馈...
We know fidelity is an essential principle of genetic transmission. If a copy of a gene is a bit different from the original, that's called a genetic mutation, and mutations are usually bad news. An organism often cannot survive with a mutated gene—and so a gene usually cannot be passed...
A new variety of a plant was created by irradiating its seeds. This is an example of _. A. Natural variation B. Induced mutation C. Genetic recombination D. Gene cloning 相关知识点: 试题来源: 解析 B。解析:题干中通过照射种子创造新植物品种,这是人工诱导变异的过程。A选项自然变异是自然发生...
Two genetic mutations in the interleukin 12–interferon gamma axis were found in the patient, and one mutation each was found heterozygously in nonconsanguineous parents. It is not the intent of The Journal to publish each instance of discovery of a gene mutation having clinical impact. However,...
What is an example of a genetic mutation that created a new species in the modern era that humans have documented? Which type of mutation is likely to have the greatest effect on a protein? A. Silent. B. Nonsense. C. Missense. D. All ...
Whatever it is about the cuckoo's gape that acts like a drug on the host's nervous system, it must have originated as a genetic mutation. Pecks that have an accompanying gape vary greatly and bear very little resemblance to those of the adult. The lower jaw of these fish is loosely...
The breast is an ideal model forablativetherapies owing to its superficial location on the thorax and absence of intervening organs between it and the skin. To conclude, we have demonstrated the utility of a simple laserablativetechnique for accurately determining the timing and velocity of a neutr...
It is widely accepted that metabolic disorders, such as obesity, are closely linked to lifestyle and diet. Recently, the central role played by the intestinal microbiota in human metabolism and in progression of metabolic disorders has become evident. In
To avoid extinction, captive populations of a number of endangered species have been established. While in captivity, these populations have been managed to retain genetic variation although direct evaluation of this strategy using molecular markers is not common. In addition, when the number of found...
(inhibitor of kappa light polypeptide gene enhancer in B-cells).IKBKAP affects the splicing of a protein referred to as either IKAP(IκB kinase complex–associated protein), or ELP (elongator protein). The mutation results in theerrant development and survival of the sensory neurons that receive...