NEET BIOLOGY

GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which describes how people believed traits were inherited before Mendel’s discoveries?
A
Traits blend like paint colors
B
traits segregate into groups
C
traits are dominant and recessive
D
some traits mix and others don’t
Explanation: 

Detailed explanation-1: -In conclusion, the statement ‘Parental traits blend like colors to produce offspring’ describes how people believed traits were inherited (A).

Detailed explanation-2: -The way in which traits are passed from one generation to the next-and sometimes skip generations-was first explained by Gregor Mendel. By experimenting with pea plant breeding, Mendel developed three principles of inheritance that described the transmission of genetic traits, before anyone knew genes existed.

Detailed explanation-3: -Observations such as these led Mendel to question the blending theory. He wondered if there was a different underlying principle that could explain how characteristics are inherited.

Detailed explanation-4: -Answer and Explanation: For Mendel’s explanation of inheritance to be correct, b. Whichever gametes combine at fertilization had to be due to chance.-this is because if only gametes with certain traits would fertilize, then the patterns of inheritance would have a varying probability.

Detailed explanation-5: -The three laws of inheritance proposed by Mendel include: Law of Dominance. Law of Segregation. Law of Independent Assortment.

There is 1 question to complete.