What are the different types of dna mutations?

Explanation:

Substitution- When one DNA base is removed out of the nucleotide sequence and another is substituted. e.g AGC where base G is substituted for Base C becomes ACC.

Deletion - Removal of one or more nucleotides

Addition - When you add another base into the DNA sequence,this can result in a frame shift which may change the amino acid that is coded for.

Duplication - One or multiple bases are repeated

Translocation - A piece of DNA breaks off and doesn't reattach to itself or its homologous pair.

Inversion - A sequence of bases is separated and then reattached in the inverse order.

a. autosomal.

explanation:

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c