A short definition of mutations

Biology

2 answers:

zvonat [6]3 years ago

5 0

The action of process of mutating

Contact [7]3 years ago

4 0

Answer: Mutations are alterations in the DNA sequence which result in permanent changes in the genetic message encoded in the DNA.

Explanation: The changes in the nucleotide sequence of the DNA can be as a result of insertion, deleted or substitution of one or more base pairs in the DNA sequence. When one or more nucleotides are inserted to a DNA sequence, the mutation is called addition or insertion, if one or more nucleotides are deleted, it is said to be deletion and when one or more nucleotides are replaced by another, it is said to be substitution mutation. Other types of mutation occur as a result of spontaneous loss of the exocyclic amino groups of the nitrogenous bases in a reaction known as deamination; and the hydrolysis of the glycosyl bond between the base and deoxyribose.

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which is not true about the alternation of generations? the life cycle of a plant alternates between diploid and haploid phases.

d1i1m1o1n [39]

A gametophyte is a multicellular haploid that is formed from the spore. It is true that the life cycle alternates from haploid to diploid.

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3 years ago

Translation begins when _______ in the cytoplasm attaches to a _________

AysviL [449]

When a Ribosome in the cytoplasm attaches to a mRNA molecule (I’m in 9th grade and we did this last semester so I’m pretty sure it’s right) :)

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3 years ago

A certain bacterial mRNA is known to represent only one gene and to contain about

Brut [27]

Answer:

C) 30,000

Explanation:

According to the given information, the bacterial mRNA consists of about 800 nucleotides. Three consecutive nucleotides together make one genetic codon which in turn codes for one specific amino acid in the protein encoded by this mRNA.

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Given that one amino acid imparts 110 units to the molecular weight of the protein, the protein with 266 amino acids have the molecular weight= 266 x 110 = 29260, that is about 30,000.

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3 years ago

When a car air bag inflated sodium azide (NaN3) decompose and produces nitrogen gas (N2) and another product. What element dose

lora16 [44]

Answer:

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Explanation:

a good day

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3 years ago

Help please :)!!!

Illusion [34]

Answer:

It would be A: a cell that has double the number of chromosomes as the parent cell

and if for some reason that is wrong then it could possibly be C and just use the same explanation.

Explanation:

This is because Haploid Gametes are the things that are produced during meiosis-which is a type of cell division which reduces the number of chromosomes in a parent diploid cell by half

7 0

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