Why is biodiversity important in a marine ecosystem
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The correct answer is option .
The is an ion made up of two atoms nitrogen and hydrogen.
The polyatomic ions are those ions, which are formed by the binding of the two or more elements, which has a charge and act as an ion. As all others are formed by a single atom, they are not polyatomic, only is formed by two atoms, hence, it is an polyatomic ion.
<h2>The correct answer is explained below:</h2>
Explanation:
- According to the question, achondroplasia, a form of dwarfism, is caused by a mutant allele of the fibroblast growth factor receptor (FGFR) encoding gene.
- This achondroplasia trait is dominant in nature. This is because presence of a single copy of the mutant allele results in the development of a dwarf phenotype.
- Let the dominant mutant allele for the trait be represented by: A.
- Let the recessive normal allele for the trait be represented by: a.
- The individual with aa genotype is normal.
- The individual with Aa genotype shows dwarfism.
- The individual with AA genotype dies before birth.
- As per the question, two people having achondroplasia have the genotype Aa.
- Gametes produced by each of the individuals are, A and a.
- Mating these individuals, we get the following possible offspring,
A a
A AA Aa
Phenotype Dies Dwarf
a Aa aa
Phenotype Dwarf Normal
- The genotypes and the phenotypes of the possible offspring are represent in the Punnett square above.
- The probability of the child to have achondroplasia is:
.
- Since the child with AA genotype dies before birth so three (genotypes Aa and aa) out of four possible children survives.