Answer:
Bacteria
Explanation:
Bacteria constitutes large group of unicellular organisms that lacks membrane bound organelles and constitute cell wall. Bacteria are used for the production of recombinant proteins.
Bacteria can be selected easily for the recombinant protein formation. The plasmid of bacteria is helpful for the integration of desired genes and the production of protein. The bacteria culture can be maintained easily in the laboratory. The different strains of bacteria with different traits can be used for the production of different recombinant proteins at low cost.
Thus, the correct answer is option (1).
The action or process of adapting or being adapted.
These reactions must absorb the energy from their surroundings. Can be cold or heat.
I hope it was the answer you needed.
Answer:
False. The species emerged during ice age were due to vicariance events.
Explanation:
There are different types of speciation. Allopatric speciation consists of the geographic separation of a continuous genetic background so that it can give place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate populations, or geological events. In this speciation, some barriers impede genetic interchange, or genetic flux, as the two new populations that are separated can not get together and mate anymore. These barriers might be geographical or ecological.
When a geographical barrier emerges, this is known as a vicariant event. Vicariance is the geographical separation of a population imposed by discontinuities in the physical environment that divides populations that were originally continuous. The process of vicariant allopatric speciation involves different steps:
- The emergence of the barrier. There is a spacial separation that divides the different populations in an area. These separations might be due to migration, tectonic plate, glaciation, among others. <em>In the case of the ice age, the barriers were the glacial formation and retraction of the sea and ocean water. </em>
- Interruption in the genetic interchange.
- The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.
- Genetic divergence by natural selection and reproductive isolation, which makes it impossible for the two groups to mate even if the barrier disappears.
- Prezigotic isolation mechanisms favored by selection once it occurs a secondary contact between the new species in formation.
Glaciation is one of the most important drivers of speciation and production of different phylogeographic structures by vicariance. Glacials originate isolated gene-pools that accumulate differences that end in reproductive isolation.
Answer:
Option E, All of the above
Explanation:
The brain of human is bigger than the brain of sheep. The cerebellum in human is bigger than the sheep and due to this reason the humans have more complex learned behaviors with more motor control and high learning abilities. This enable humans to develop speech and language function properly.
However, the olfactory bulb is larger in the sheep’s brain to ensure that it uses its senses such as smell and feel effectively.
Hence, option E is correct