Answer:
a) genetic drift - yes
b) Natural selection - yes
c) Gene flow - yes
d) Mutation - yes
Explanation:
factor that alter the allele frequencies are
a) genetic drift - yes
b) Natural selection - yes
c) Gene flow - yes
d) Mutation - yes
Genetic drift - Alter occur due to sampling error or selecting error. in this some error occur while deciding for the allele for the next generation.
Natural selection - it is due to large number of one type of allele in the population
Gene flow - it alter because of migration of allele among the populations.
Mutation - it is strong for introduction of new alleles in the population
Survival of the fittest! Specific traits in an organism that keep its DNA prevalent despite being attacked by bigger organisms or natural disasters.
Answer:
The correct answer will be- Transverse tubules
Explanation:
Transverse tubules are the tubular structure formed by the extension of the plasma membrane which innervates the cardiac and skeletal muscle cells. The T-tubules structure is structured between 20-40 nm and located at the junction of the I and A band.
The signals from the motor neurons once raches the motor endplate in muscles are carried into the muscles by these T-tubules which transmits the signals to muscle cells at very high speed. The T-tubules cause the release of the Calcium ions from the sarcoplasmic reticulum that cause contraction of the skeletal muscle.
Thus, Transverse tubules are the correct answer.
Algae has various advantages as a biofuel. Some of these are as follows:
1. Algae requires very less space and use sunlight to grow.
2. The rate of multiplication is also high.
3. These are very high energy yielding microorganisms.
4. It can be grown easily on any agricultural or unagricultural land.
5. It is efficient and even environment friendly.
Answer:
He argued that the consumers have moved from a phase of being anxious to spend to a more relaxed state of spending more.
Explanation:
Gerzema is an American Entrepreneur which studies how various factors affect consumer behavior. He argued that the consumers have moved from a phase of being anxious to spend to a more relaxed state of spending more.
He suggested that 10 percent of their income should be saved and more focus should be on the quality of the goods and services being spent on instead of the quantity.
