Answer:
Base substitution mutation
Explanation:
Mutation is the alteration or change that occurs to the sequence of a gene caused by a mutagen (chemicals) or spontaneously-induced. Depending on how the mutation occurs, it is of different types. The mutation shown in this question is as follows:
ATCGGCTTAACG to ATCGGCTAAACG
This type of mutation is called SUBSTITUTION MUTATION. Substitution mutation is a type of mutation that involves the replacement of one or more nucleotide base by another. In this original sequence; ATCGGCTTAACG, the eight base T was replaced by base A in the sequence, hence, it is a substitution mutation.
Answer:
6/16 dogs will not be able to smell.
Explanation:
Genes A and B are considered for scent smell.
Individuals homozygous for either one or both of the nonfunctional recessive alleles are not able to smell.
The final cross would be AaBb x AaBb which has outcome of;
Individual with homozygous nonfunctional recessive alleles (bold ones):
- One nonfunctional recessive alleles: Aabb, aaBB, aaBb, Aabb, aaBb (5/16)
- Two nonfunctional recessive alleles: aabb (1/16)
- All nonfunctional recessive alleles: 6/16 dogs that could not smell scents
D lowering the activation energy of a reaction.
