1. Reproductive isolation is essential for population divergence. The mechanisms of reproductive isolation are essential for speciation which is the process of development of new species from preexisting species.
Due to reproductive isolation individuals of the same population will acquire different types of genetic variations and mutations such that males and females of the isolated populations cannot reproduce with each other.
3. Mechanisms of reproductive isolation are temporal isolation, behavioural isolation, gametic isolation, ecological isolation, mechanical isolation, hybrid inviability, hybrid sterility and hybrid breakdown.
4. Species populations within the same habitat become reproductively isolated in sympatric speciation. This speciation is a resultant of polyploidy where an offspring develops with twice the number of chromosomes.
5. Allopatric speciation is also called geographic isolation and it is the most common type of isolation. A geographical barrier separates individuals of a species and the separated groups develop into new species.
During transcription, the RNA polymerase reads the template strand within a gene and adds complementary bases.
Transcription is the process by which the multi-unit enzyme RNA polymerase creates RNA molecules from a DNA template. Prior to translation, which is the process of decoding RNA into proteins, the transcription of genetic information into RNA is the initial stage in gene expression.
Together with transcription factors, RNAP forms a transcription pre-initiation complex by attaching to the promoter region on a DNA strand (PIC). The transcription procedure is started at this point. At the 5' end of a DNA strand, upstream, is the promoter site.
An intermediary enzyme called RNA polymerase is in charge of the process of transcription, in which DNA serves as a template for the synthesis of RNA-based genetic material. In the cell's nucleus, transcription occurs.
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Answer:
Energy from the Sun heats the atmosphere. ... Some of the sunlight that reaches Earth's surface is absorbed. The energy from this light heats the substance that absorbs it. The sand can become warm or even hot as it absorbs some of the sunlight that hits it.
Explanation: