Non-coding DNA regions are not under the same selective pressure as coding DNA, which means mutations in non-coding regions are more likely to be tolerated without affecting the organism's survival or reproduction. This leads to a higher accumulation of genetic variation in non-coding regions over time. In contrast, mutations in coding regions can have a direct impact on the organism's phenotype and are more likely to be eliminated by natural selection, resulting in lower polymorphism in coding DNA. **

The non-coding strand of DNA is used as a template to create the coding strand during the process of transcription. An enzyme called RNA polymerase binds to the non-coding strand and synthesizes a complementary RNA molecule. This RNA molecule is then processed and modified to become messenger RNA (mRNA), which serves as the template for protein synthesis. The mRNA is read by ribosomes to assemble the corresponding amino acids into a protein. **

Non-coding DNA, such as introns and intergenic regions, is not under the same selective pressure as coding DNA, which must maintain the amino acid sequence of proteins. This lack of selective pressure allows for more genetic variation to accumulate in non-coding regions over time. Additionally, non-coding DNA can tolerate mutations more easily without affecting the organism's phenotype, leading to a higher level of polymorphism. These polymorphisms in non-coding DNA can still have functional implications, such as regulating gene expression or affecting chromatin structure. **

Non-coding DNA is used in genetic fingerprinting because it is highly variable between individuals, making it useful for distinguishing between different people. Non-coding DNA, also known as junk DNA, does not code for proteins and is not involved in the expression of genes, so it is less likely to be under selective pressure and more likely to accumulate mutations over time. This high variability and lack of functional constraints make non-coding DNA ideal for genetic fingerprinting, as it can provide unique genetic profiles for individuals. **

Non-coding DNA segments, also known as non-coding regions or junk DNA, were once thought to have no functional significance. However, recent research has shown that non-coding DNA can have important regulatory roles in gene expression and can influence traits. For example, non-coding DNA can contain regulatory elements that control when and where genes are turned on and off, ultimately affecting an organism's traits. Additionally, non-coding DNA can also contribute to genetic variation and evolution by serving as a source of genetic diversity. Overall, non-coding DNA segments play a crucial role in shaping an organism's traits and genetic makeup. **

No, dinosaur DNA does not cross with human DNA. This is because dinosaurs and humans are from completely different evolutionary lineages and are separated by millions of years of evolution. Additionally, dinosaur DNA has not been found intact, as it degrades over time, making it impossible to cross with human DNA. Therefore, there is no scientific evidence to support the idea that dinosaur DNA can cross with human DNA. **

In genetics, the process of coding DNA into mRNA is carried out through a process called transcription. During transcription, an enzyme called RNA polymerase binds to a specific region of the DNA called the promoter and begins to unwind the DNA double helix. The RNA polymerase then reads the DNA sequence and synthesizes a complementary mRNA strand by adding nucleotides according to the base pairing rules (A with U, G with C, etc.). Once the mRNA strand is synthesized, it is processed and transported out of the nucleus to be translated into a protein by ribosomes. This process is essential for gene expression and the production of functional proteins in the cell. **

The base sequence in the coding strand of DNA is determined by the complementary base pairing rule. Adenine (A) always pairs with thymine (T), and guanine (G) always pairs with cytosine (C). This means that the sequence of bases in the coding strand is determined by the sequence of bases in the template (non-coding) strand, with adenine pairing with thymine and guanine pairing with cytosine. The resulting base sequence in the coding strand is a complementary copy of the template strand, with the exception that thymine is replaced by uracil in RNA transcription. **