this graph is addressing the beginner one
Answer: Aquaponic systems require electricity to run the system which can be difficult in developing countries.
Answer:
d. The two genes are closely linked on the same chromosome.
Explanation:
In a testcross involving F1 dihybrid, parent with both the recessive traits is crossed with the F1 dihybrid. Offspring is expected in 1:1:1:1 ratio because formation of gametes is a random process and parental type and recombinant type gametes are expected to be produced in same numbers.
If the two genes are present near to each other on same chromosome they can exhibit linkage. They show tendency to get inherited together. Hence new recombinants are produced in lesser number than the parental type offspring.
Answer:
The correct answer is - change in DNA is called mutation which is essential for evolution including speciation.
Explanation:
A mutation is a change in the genetic or hereditary material which is DNA. A mutation is the main reason behind the evolution of the organism or species and speciation can be led by evolution, which takes place by results in the accumulation of many small changes in DNA or genetic changes in a population over a long period of time.
Mutations that change in DNA are required for the evolution process they are the raw material of genetic variation. without changes in hereditary material, there is no speciation or evolution possible.