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Sladkaya [172]
3 years ago
5

What is the epigenome? the complete set of noncoding DNA possessed by an individual organism the sequence of DNA methylation sit

es within the genome of an organism the complete set of sequences that Xist interacts with in an organism the sequence differences within the coding regions when comparing two different individuals of the same species the complete set of chromatin modifications possessed by an individual organism
Biology
1 answer:
-Dominant- [34]3 years ago
8 0

Answer: 1 the complete set of sequences that Xist interacts with in an organism

Explanation:

The epigenome is the collection of all the epigenetic marks in the DNA of a single cell, thus referring to the complete set of modifications that occur in the chromatins that each organism has.

Regulatory elements in cis are non-coding regions of DNA that are capable of regulating the transcription of nearby genes.

DNA methylation is a process whose objective is to add methyl groups to the DNA molecule in the cell, in this process a change in the activity of a segment of DNA can occur without this meaning changing the sequence.

The sequence of DNA methylation sites occurs within the genome of an organism

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Answer:

The correct answer is: Yes, this is an example of Reproductive Isolation.

Explanation:

  • Reproductive Isolation can be defined as the mechanism adopted by different species during the course of their evolution, due to which the individuals belonging to different species are incapable of mating with each other and producing viable offspring.
  • The given question is an example of Mechanical, Pre-zygotic Reproductive Isolation.
  • Prezygotic Isolation refers to the mechanism adopted by individuals of different species during the course of evolution such that successful fertilisation of gametes from individuals of different species never occur, hence a viable zygote is never formed.
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  • Here, the pollen grain from the flower of one species of juniper is unable to form the pollen tube when its sits on the stigma of the flower of another species of juniper. This is an example of Mechanical Isolation.
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