The main reason for the species extinction is for the ecological changes.
Answer: Missense mutation
Explanation:
Missense mutation is a type of point mutation where a single nucleotide is changed to cause substitution of a different amino acid. This in turns render the resulting protein non-functional.
In the case of sickle-cell disease, the sixth amino acid in the gene sequence, glutamate (GAG) is substituted with valine (GUA), due to Adenine nucleotide changed to Uracil nucleotide. Thus, missense mutation has occurred
The number of weight gained in pregnancy should be different based on the BMI. Assuming Sadie BMI is 25-29.9kg/m2 then the normal weight gain for single pregnancy would be 15 to 25lbs.
Higher BMI will cause the normal weight gain become lower. For BMI >30kg/m2 normal weight gain would be 11-20lbs
1. hydrosphere: the system that contains all forms of water; liquid, solid and gas
2. biosphere: the sphere that contains all living things
3. atmosphere: the system that contains the gaseous layer of a planet
4. cryosphere: the system that contain the frozen ice portion of a planet
5. lithosphere: the system that contains the solid rocky crustal portion
I think the answer is nitrogen fixation.
