Answer:
A gene is a basic physical and functional unit of heredity. Genes are present in the chromosomes of an organism. Genes carries the instructions to make molecules called as proteins which performs specialized function and building up the structure of living organisms. Genes are transferred from the parent organism to the offspring organism by the process of reproduction, hence maintains heredity in the living beings.
Answer:
A. Advantageous alleles do not arise on demand.
Explanation:
According to theory of evolution, heritable traits in organisms can change across the generations leading to their evolution. There are many evolutionary forces like natural selection, mutation, genetic drift etc. However, it is incorrect to assume that the advantageous alleles will always be selected in evolution. Accumulation of random mutations, genetic drift or bottle neck effect are independent of this factor. Also, organisms with different degree of beneficial traits can coexist in same time frame. Just because humans evolved in a particular direction does not mean that other organisms will also do so.
Answer:
There is not junk DNA
Explanation:
All DNA is necessary for the cycle in our bodies
Producer Alga is A plant and produces food for other organisms <span />