Prokaryotes and eukaryotes package their DNA molecules with protein in structures called chromosomes. A prokaryotic chromosome is circular and resides in a cell region called the nucleoid.
are found in the oceans where new land is constantly forming. For example in the Atlanntic
TATTCATTCATTA—TGATTT—ATTCG
TATTCATTCATTA—TGATTT—ATTCG sequence contains a mutation that will affect the formation of pepsin.
- A mutation is a permanent alteration to the DNA's nucleotide sequence.
- Replication or recombination both result in mutations.
- Base substitutions, deletions, and insertions could be to blame.
- In reference to the above question, the DNA fragment that generates the pepsin enzyme's encoding code is CATTGTTA.
- Option TATTCATTCATTA—TGATTT—ATTCG is the right response.
- Adenine (A) replaces the purine nucleotide (G) guanine in the DNA section that codes for pepsin.
- A transition type point mutation is the name given to this kind of mutation.
- Due to base substitution, the mutated segment CATTCATTA will not encode pepsin.
<h3>What are the functions of pepsin?</h3>
- Pepsin is a stomach enzyme used to break down proteins in food that has been consumed.
- Pepsin is produced by the main cells of the stomach as pepsinogen, an inactive zymogen.
- The stomach's lining's parietal cells secrete hydrochloric acid, which lowers the pH of the stomach.
- Pepsin is activated at a pH between 1.5 and 2.
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Answer:
The theory of natural selection, formulated by Darwin, explains how organisms with better characteristics are able to survive and reproduce. According to the theory of Darwin, genetic variations occur among organisms of a species. Those organisms which have better adaptations to survive in the environment are able to survive and pass on their traits to their offsprings. The organisms not having better characteristics are not bale to survive and those traits get completely removed through the process of evolution.
For example, Darwin studies showed that The Galapagos island comprised of 13 different kinds of finches on different islands. The main difference between these finches was their beaks. The differences in the beaks occurred due to the different modes of nutrition in the finches of different islands.
Answer:
True
- Competition exclusion does controls population size.