With this information I don’t fully understand the question but broadly speaking any sequence that would not made transcribed into the correct RNA from the DNA will be
mutant.
Example is the first normal DNA is read 5’ - GGT 3’ and the RNA will be 3’CCA’ 5’ as it is COMPLEMENTARY. (Important keyword with this)
If the assignment wants you to have a silent mutation that Change the RNA to something that is not complementary to the DNA but will still produce that same protein as the example above. If you need to make a new protein change the rna so the codon will make a different protein from the above sequence
Answer:
Postzygotic isolating mechanism
Explanation:
Reproductive isolation can occur due to prezygotic or postzygotic isolating mechanism. Prezygotic mechanism prevents fertilization of gametes and can occur due to different mating behavior, different mating time period etc. Postzygotic mechanism occurs after the formation of zygote i.e. the organisms are able to mate and fertilization also occurs. However the resultant zygote may not survive. It might not survive immediately or might die before reaching the reproductive maturity. Such a situation would still come under reproductive isolation because the resultant offspring is not viable and not able to pass on the genes to the next generation.
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A plant-life filled biome of sorts, like a thick forest.
Hope this helps!