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bezimeni [28]
3 years ago
12

**98 POINTS!!!!!!** Explain how a mutation can change the DNA but not change the amino acid sequence.

Biology
2 answers:
Reil [10]3 years ago
8 0

A nonsense mutation is also a change in one DNA base pair. Instead of substituting one amino acid for another, however, the altered DNA sequence prematurely signals the cell to stop building a protein. This type of mutation results in a shortened protein that may function improperly or not at all.

Alisiya [41]3 years ago
5 0

Silent mutations cause a change in the sequence of bases in a DNA molecule, but do not result in a change in the amino acid sequence of a protein

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Suppose a geneticist isolates two bacteriophage mutants. One mutation causes clear plaques (c), and the other produces minute pl
Nesterboy [21]

Answer:

The mentioned parental types are c+m- and c-m+. Thus, the recombinants will be c+m+ and c-m-.  

Now, the given distance between c and m is 8 map units. Thus, the recombinant frequency is 8% or 0.08.  

The total recombinants from 1000 plaques will come out to be 80,  

Thus, the recombinants of each type will be 40.  

Total parental type will be 920, and therefore, each parental type count will be 460.  

Thus, expected c+m- = 460, expected c-m+ = 460, expected c+m+ = 40 and expected c-m- = 40.

5 0
2 years ago
Immunoglobulins that attach to and sensitize mast cells and basophils are
Ugo [173]

Answer:

IgE

Explanation:

Immunoglobulins can be described as antibodies that are found in blood and other bodily fluids of humans and other vertebrate animals. And their major function is that they help identify and destroy foreign substances such as microbes such as bacteria and protozoan parasites.

They are known to be produced by produced by plasma cells (white blood cells).

Immunoglobulins are classified into five categories: IgA, IgD, IgE, IgG and IgM. And are distinguished by the type of heavy chain they contain. IgG molecules possess heavy chains known as γ-chains; IgMs have μ-chains; IgAs have α-chains; IgEs have ε-chains; and IgDs have δ-chains.

In this case, IgE is the immunoglobulin that attach to and sensitize mast cells and basophils.

6 0
3 years ago
Compared to its surroundings, the concentration of solutes is low inside a cell so, the cell is in a hypertonic, hypotonic or is
Kazeer [188]

Answer:

The cell is in a hypertonic solution.

Explanation:

The solution is hypertonic because the amount of solute(s) is higher outside of the cell than it is inside the cell, so the solvent (e.g. water) would move from the cell to the solution in order to obtain equilibrium between the two.

7 0
3 years ago
_____________________ from the wind transfers to the water as the water moves toward land
QveST [7]

Answer:

Energy

Explanation:

Energy from the wind transfers to the water as the water moves toward land. Like all waves, water waves only transport energy. They move only through matter, so water waves are mechanical waves.

6 0
2 years ago
According to the phylogeny tree, which two phyla are most closely related? Chordata and Mollusca Cnidaria and Nematoda Annelida
devlian [24]
<h2>Answer:</h2>

Option C is correct.

C. Annelida and Arthropoda

<h2>Explanation:</h2>

Annelida and Arthropoda are the phyla belong to the kingdom Animalia. In these both phylum animals are consist of segmented bodies. But the animals in Annelida consists of a hydrostatic skeleton whereas the animals in Arthropoda consist of exoskeleton made up of chitin.


6 0
2 years ago
Read 2 more answers
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