Leaves wilt.
Growth is slow.
Brown spots appear on leaf tips.
New and older leaves eventually turn yellow and fall at the same time.
Soil is constantly damp or drainage is too slow.
Roots become spongy, turn brown and rot.
The square denotes male. One parent is recessive, so X must have at least one recessive allele. B is the right answer.
Lithium, some antibiotics, ingesting large amount of penicillin <span />
Answer:
1. Sexual Reproduction
2. Genetic variations
Explanation:
Human reproduces through sexual reproduction. Sexual reproduction is the process of production of new progeny by the formation of male and female gametes (sperms and egg respectively) and fusion of gametes. During gamete formation, crossing over adds new gene combinations to the gametes. The genetic variations make the progeny of sexual reproduction different from each other and from the parents.
