Answer:
The resistance allele is recessive
Explanation:
According to Darwin's pea experiment, the recessive trait appeared after a few generations.
Here in this case too the resistant individuals appeared after the first generation. This also implies that the offspring of first generation must be carrier of this recessive trait.
Let the susceptible domesticated strain trait be represented by "S"
and the recessive resistant wild strain trait be represented by "s"
Then,
F1 generation
SS * ss
Ss, Ss, Ss, Ss ------ All are heterozygous susceptible individuals
F2 generation
Ss * Ss
SS, Ss, Ss, ss
ss shows reappearance of resistant wild trait.
Hence, the resistance allele is recessive.
B. carbon
Carbon is a key element found in all carbohydrates, lipids, proteins and nucleic acids
Global cooling because it habitat was too cold and also there cooled blooded and so the change in temperature severely decreased their population so they died out.
Answer:
Artificial selection can be described as the method by which organisms with the desired characteristics are crossed so that offsprings with better qualities can be produced.
Although artificial selection is an effective way to produce organisms with better traits, yet this technique has some consequences of its own. Growing plants and animals through this method will lead to lesser genetic variety. In the future id any disaster such as a disease infects the organisms then the entire population will be eradicated as there will be little or no genetic diversity at all.
Answer:
a. Recall and master the procedure in using a salinometer
Explanation:
Salinometer, which is also known as salimeter is a laboratory equipment used to measure the salinity of a solution. Salinity refers to the concentration/amount of salt in a solution.
According to this question, a student was instructed by his/her teacher to measure the salinity of brine used in curing fish. This means that to do this, the student will have to make use of a SALINOMETER. In order to use the salinometer, the student has to recall and master the procedure in using a salinometer.
