The answer is B to your question
The top layer, i believe.
Skin. hair. nails. hope these helped!
Answer:
Sutton and Boveri published independent papers proposing what we now call the chromosome theory of inheritance.
Answer:
Option C
Explanation:
There are cases when two organism of different species mate to produce offspring but that offspring is unable to reproduce further. Hence, such organisms do not belong to the same species. Thus, Option D is incorrect
However, when two organisms are able to reproduce viable offspring, they are said to be of the same species. Such organisms are also similar in looks.
Hence, option C is correct
