The amount of enzyme activity in a cell that is homozygous for a mutant allele is 0 units. The amount of enzyme activity in a cell homozygous for the WT allele is 200 units. The amount of enzyme activity in a heterozygote is 0 units. What type of allele is the mutant allele?
a. null/amorphic
b. neomorphic
c. dominant negative
d. hypomorphic
e. hypermorphic

The best answer is "C"

Dominant negative

Explanation:

Dominant negative represents a class of mutation in which a mutant receptor interferes with the function of the wild-type version of the receptor.

null/amorphic: It is a form of mutation that causes the complete loss of Gene function (protein) by disrupting translation and/or preventing transcription.

Neomorphic: Describes a mutation where altered gene product possesses a completely new molecular function and sometimes pattern of gene expression.

Hypmorphic: describes a mutation that causes a partial loss of gene function usually through reduced (protein, RNA) expression or reduced functional performance.

hypermorphic: describes a mutation that causes an increase in the normal gene function resulting from increased mRNA or protein expression.

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

on the planet jupiter, the acceleration due to gravity is approximately 26 m s2 , roughly 2.7 times the acceleration due