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3 years ago

This is the normal nucleotide sequence on a dna strand: A-C-T-G-G-A-T what is a substitution?

Biology

2 answers:

muminat3 years ago

6 0

Answer: The correct answer is -

(C.) A-G-T-G-G-A-T.

Substitution is a type of point mutation (a permanent change in the nucleotide sequence of DNA when one nucleotide base sequence is substituted by another base).

In this question, Cytosine (C) at second position is substituted by Guanine (G) only in option C).

Thus, option C) is the right answer.

jenyasd209 [6]3 years ago

4 0

.) A-G-T-G-G-A-T is substitute

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In a certain breed of dogs, brown fur (B) is a dominant trait over yellow fur (b). Gregory owns a brown female. She produced a l

nika2105 [10]

It’s c because one color can get to two different animals

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2 years ago

Read 2 more answers

Which statement best describes the relegation ship between proteins and nucleus acids

Novosadov [1.4K]

Answer:

The central dogma of molecular biology best describes the relationship between proteins and nucleic acid.

Explanation:

Nucleic acid such as DNA is the repository of genetic information in most organism.

The genetic information stored in DNA is Transferred to RNA by transcription which deals with the the production of mRNA from DNA.

The mRNA then undergo translation to transfer its own own genetic information in form of codons to specify amino acids of a protein molecule.

Thus the Central dogma of molecular biology relates proteins and nucleic acids.

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2 years ago

Several species of leopard frogs are common throughout North America, where their ranges overlap. Different species of leopard f

MrMuchimi

the correct answer is A- Reproductive isolation occurred through behavioral isolation

A process of formation of a new species from an existing species is called speciation. New species may formed due to geographical or reproductive barriers which isolates the members of a population of a species to form a new species.

In the given question, speciation in In the leopard frogs occurred due to a particular or specific call given by males to the females. The courtship call lead to reproductive isolation due to change in behavior. Such type of behavioral change will help in recognizing mates of the same species and this will act as a reproductive barrier among the other related species.

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3 years ago

Which of the following defines an ecological succession

miv72 [106K]

Answer:Ecological succession is the process that describes how the structure of a biological community (that is, an interacting group of various species in a desert, forest, grassland, marine environment, and so on) changes over time. The structure of this community becomes more complex as new species arrive on the scene.

Explanation:

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2 years ago

In a plant called jimsonweed, flowers can be white or purple. A jimsonweed plant with white flowers is crossed with a jimsonweed

STALIN [3.7K]

Answer:

Although statements are not given in the question, we could make the most possible deduction as follows:

The allele for purple flowers is dominant whereas allele for white flowers is recessive.

Explanation:

According to the question,

Purple flower plant was crossed with white flower plant.
All offsprings have purple flowers.

Here we have one possibility that both parents were homozygous but in their own traits. Purple flower plants were "PP" and white flower plants were "pp" So, the first progeny (direct offsprings) would have "Pp". So, as per considerations, purple is dominant allele which will mask the recessive allele thus defining the color of all offsprings as purple. However, further cross of their generation will definitely end up into purple and white flowers (3:1) but this condition is not mentioned in the statement.

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3 years ago