Gregor Mendel, an Austrian monk who lived in the 1800's, is known as the father of genetics. Explain why Mendel has been given that title. Include his 3 principles of heredity and explain why each is important.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.

the answer is symmetrical : )