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blondinia [14]
3 years ago
12

Which phrase describes a gene in its simplest form?

Biology
1 answer:
vovangra [49]3 years ago
7 0

Answer:

Option-D, a segment of DNA

Explanation:

A gene represents the particular segment of DNA which contains the instruction for the trait of an organism. The nucleotide sequence present in the segment provides the instruction in the form of codons.

The gene is present in the form of its alternative form called alleles which are located on the chromosomes at locus. The alleles represent the variants of the gene and therefore controls the two variety of a single trait.

Thus, Option-D is correct.

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The ancestors of modern-day fish were vertebrate chordates. Vertebrate chordates are believed to have evolved from invertebrate
Scilla [17]

Answer:

The correct answer is option B, that is, an endoskeleton evolved to enclose the dorsal nerve cord, which develops from the notochord.

Explanation:

It has been discovered that the ancestors of the modern-day fish were vertebrate chordates. The vertebrate chordates are considered to have evolved from the invertebrate chordates that are identical to the present day tunicates. It has been found that in vertebrates the endoskeleton has evolved to encompass the dorsal nerve cord that has been developed from the notochord (a characteristic of invertebrates).

8 0
3 years ago
Nucleotides are the building block for nucleus acids the nucleotides that build dna are required to have which of the following
Gala2k [10]

Answer:

Yes the three you chose were correct

Explanation:

4 0
3 years ago
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Makovka662 [10]

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Explanation:

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6 0
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