1.1 The theory of evolution by natural selection was first described by:
A - NSC Life Sciences - Question 1 - 2016 - Paper 2
Question 1
1.1 The theory of evolution by natural selection was first described by:
A. Gregor Mendel.
B. Watson and Crick.
C. Jean Baptiste de Lamarck.
D. Charles Darwin.
Worked Solution & Example Answer:1.1 The theory of evolution by natural selection was first described by:
A - NSC Life Sciences - Question 1 - 2016 - Paper 2
Step 1
1.1.1 The theory of evolution by natural selection was first described by:
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The theory of evolution by natural selection was first described by Charles Darwin, making option D the correct answer.
Step 2
1.1.2 When an individual that is homozygous dominant for a particular characteristic is crossed with an individual that is homozygous recessive for the characteristic, all the offspring would be ...
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
All offspring from a cross between a homozygous dominant individual and a homozygous recessive individual would be heterozygous dominant, inheriting one dominant allele from the homozygous dominant parent and one recessive allele from the homozygous recessive parent.
Step 3
1.1.3 The absence of the protein melanin results in the disorder called ...
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The absence of the protein melanin results in albinism, a condition characterized by a lack of pigment in the skin, hair, and eyes due to the lack of melanin production.
Step 4
1.1.4 A hummingbird's long beak is said to be an adaptation for ...
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
A hummingbird's long beak is an adaptation that allows it to feed on nectar from flowers that other birds cannot access; this adaptation has evolved as a response to the availability of food sources.
