Answer: The correct answer is- A) Mutations must be present in parents and then passed to offspring.
Mutation can be described as the permanent change in the genetic material ( DNA) of an organism. It can be beneficial or harmful to the life form. Mutations can be heritable ( that is passed from one generation to the next) or non inheritable ( not passed from parents to offsprings).
A silent mutation ( change in the nucleotide sequence without any change in the amino acid sequence) that does not show any observable effects in the phenotype of the organism.
Thus, only option A) is not true about mutation.
All the statements are true about mutations except Mutations must be present in parents and then passed to offspring.
Thus, An organism's observable traits, or phenotype, may or may not change as a result of a mutation. Evolution, cancer, and the maturation of the immune system, including junctional variety, are among the normal and malignant biological processes in which mutations play a role.
All genetic variety originates from mutation, which also provides the basis for the action of evolutionary forces like natural selection.
Sequence changes can take many distinct forms as a result of mutation. Gene mutations can have no effect, change the gene's product, or stop the gene from working fully or correctly. Non-genic areas are likewise susceptible to mutation.
Thus, All the statements are true about mutations except Mutations must be present in parents and then passed to offspring.
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cell membrane?
Answer:
Water channel proteins are helps the molecules move through a cell membrane.
Explanation:
this protein acts like a pore in the membrane that lets water molecules or small ions through quickly. This proteins (aquaporins) allow water to diffuse across the membrane at a very fast rate. Ion channel proteins allow ions to diffuse across the membrane.
Answer:
Gated Channel protein
Explanation:
Answer:
Beavers do have a positive and a negative impact on their environment around them. when they build dams, they do create new wetland environments for other marine animals and land species.
Explanation:
wetland help slow down erosions and raise the water tables, they also help purify waters too!
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(1) increased warming of local ecosystems
(2) increased exposure to ultraviolet light
(3) reduction in the pH of acid precipitation
(4) reduction in the frequency of floods and
droughts
Answer:
The correct answer is option (2) "increased exposure to ultraviolet light".
Explanation:
The ozone shield or the ozone layer is a region of the atmosphere comprised of high concentrations of ozone that absorbs most of the Sun's ultraviolet radiation. Therefore, damage to the ozone shield will cause increased exposure to ultraviolet light over the United States. This could cause harmful consequences such as an increase of cases of skin cancer, sunburn and cataracts.
Answer:
C. Scanning tunneling microscope
Explanation:
Took the unit test review