A dichotomous key for identifying fish is shown. 3a
5a
la Body is long and narrow...
Go to 2
1b. Body is not long and narrow.
.Go to 3
2a Pointed fins
..Trumpetfish
2b Fish has smooth fins
.Moray eel
Eyes located on top of the head
.Go to 4
3b Eyes located on either side of the head.. ..Go to 5
4a
Long, whip-like tail
Spotted eagle ray
4b
Short, blunt tail..
...Peacock flounder
Body is spotted
...Go to 6
5b Body is not spotted...
Go to 7
ба Chin whiskers present...
Spotted goatfish
6b Chin whiskers absent..
...Bandtail puffer
7a
Striped
Go to 8
7b No stripes
Glassy sweeper
8а V-shaped tail...
..Squirrelfish
8b Blunt, rounded tail
Glasseye snapper
Based on this key, which two fish have eyes located on either side of their head and are not spotted?
Glassy sweeper and squirrelfish
Glasseye snapper and spotted eagle ray
Spotted goatfish and bandtail puffer
Peacock flounder and glassy sweeper

Suppose a point mutation, such as a change from an adenine to a guanine, occurs in the genome of a human sperm cell. the mutation could occur in any region of a gene. the effect of the mutation on the phenotype of the offspring will be determined by where the mutation occurs and its effect on the final gene product. in which of the following scenarios could the mutation alter the phenotype of the offspring? select all of the scenarios that apply the mutation occurs in the promoter and affects the rate of gene transcription. the mutation results in a new, dominant allele the mutation occurs in a portion of an intron not responsible for exon splicing the mutation occurs in a gene that controls development and alters differentiation of a cell type during development. the mutation occurs in a codon and alters the function of the final protein e mutation occurs in a codon, and the amino acid sequence of the final protein is unchanged.