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artcher [175]
3 years ago
12

Given what you learned about how influenza changes over time, how could you explain the emergence of drug resistance in bacteria

l pathogens?
Biology
1 answer:
GalinKa [24]3 years ago
8 0

Answer:

Beneficial mutations events can generate resistance to drugs

Explanation:

Bacteria can develop antibiotic resistance through mutations, as well as horizontal transference events, that allow them to reduce/eliminate the effectiveness of drugs used to treat infections. For example, penicillin-resistant strains have been identified in <em>Staphylococcus aureus</em> and <em>Streptococcus pneumoniae</em>. In general, mutations have a negative impact on the fitness of the organism; however, there are cases where mutations increase the fitness of the individual. In consequence, antibiotic resistance may occur by natural selection, where antibiotic-resistant bacteria that exhibit beneficial mutations are selected to survive and perpetuate their genetic material.

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What type of genetic disorder is leber hereditary optic neuropathy
ivanzaharov [21]

Answer:

Mitochondrial Disorder

Explanation:

The LHON stands for leber hereditary optic neuropathy is a type of mitochondrial disorder. The disorder is generally observed in young males. The mitochondrial disorder are transferred from mother to its progeny. The disorder causes retinal ganglion cells (RGCs) and the exons of RGCs to degenerate. The disorder causes sudden painless failure of vision. The disorder leads to loss of central vision, optic atropy and central scotoma.

The most of the individuals with LHON do not possess the signs of the disorder. The disorder is caused by mutation in maternal DNA, thus it is a type of mitochondrial disorder.

7 0
3 years ago
Male peacocks have tail feathers that make up about 60% of their body length. during the mating season they contract muscles to
vovikov84 [41]
<span>The first part of the question is: The male's ability to shake its tail is the mechanistic cause of this behaviour. For the second part of the question, the mate choice is the adaptive function of this behaviour.</span>
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3 years ago
Which statement explains a way that gymnosperm benefit from animals
miss Akunina [59]
The first person that answered is correct just to let you know!
6 0
3 years ago
What would be the mRNA base sequence formed during transcription, using the DNA sequence shown above?
Grace [21]
The mRNA base arrangement shaped amid the translation utilizing the DNA grouping appeared above label feline ggc at is TAG CAT and GGC would combine with UTC GTU and TTG. 
The single mRNA atom is blended as a constant strand. The other contrast between the two procedures is that amid DNA union the whole chromosome is replicated. Amid translation, particular qualities are deciphered in light of signs, for example, interpretation elements.
4 0
4 years ago
How do the cells in meiosis differ from the cells in mitosis
Karo-lina-s [1.5K]
The purpose of mitosis is cell regeneration, growth, and asexual reproduction,while the purpose of meiosis is the production of gametes for sexual reproduction. Mitosis is a single nuclear division that results in two nuclei that are usually partitioned into two new daughter cells. The nuclei resulting from a mitotic division are genetically identical to the original nucleus. They have the same number of sets of chromosomes, one set in the case of haploid cells and two sets in the case of diploid cells. In most plants and all animal species, it is typically diploid cells that undergo mitosis to form new diploid cells. In contrast, meiosis consists of two nuclear divisions resulting in four nuclei that are usually partitioned into four new haploid daughter cells. The nuclei resulting from meiosis are not genetically identical and they contain one chromosome set only. This is half the number of chromosome sets in the original cell, which is diploid.
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3 years ago
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