About the question:
You will find the chart in the attached files
Answer:
b) x: fin
y: lateral line
z: swim bladder
Explanation:
The <u>dorsal fin</u> is found in the dorsal region of the fish body. Depending on the species, there can be one or two dorsal fins. Membranous structures and bony or cartilaginous ratios compose the fins. One of the main functions is to stabilize the body in water, providing equilibrium. When the dorsal fin is erect, it acts as a keel, helping the fish not to turn aside. Fishes also use these fins as protection because the cartilaginous or bony ratios act as spines. The animal uses these spines to defend itself from predators. The morphological variety of dorsal fins in the different species is used in taxonomy.
The <u>Lateral Line</u> is a system or sensory organ composed of special receptors called neuromasts, which can be found all along the lateral region of the animal. The lateral line perceives information from the environment, such as light, sound, or water movement, among others. These signs are translated into nervous messages. The lateral line is useful to detect prey, predators, other animals moving, objects, etcetera. It is significant for intraspecific interaction, especially during swimming motions in schools. The lateral line receives perturbations of short distance, generated by other living beings or by objects. Some studies confirm that the lateral line is also sensitive to chemical stimuli.
The<u> swim bladder</u> is a neumatic sac-like structure filled with gases coming from the blood. Its main function is to allow neutral floating and let the animal in suspension at any depth, with no need for muscular effort. The animal can regulate the size of the bladder. This organ can be found in most pelagic fishes, while the benthonic ones or the ones that actively swim lack it.
I'm assuming that you want us to tell you what organism does these things. So it would be a plant.
Answer:
There is only one visible choice I can not properly answer this question I would have to say A. as its the only choice avalible
Explanation:
Answer:
Steven has heterozygous genotype.
Explanation:
Tongue rolling is a dominant trait, that means the trait can express itself at the homozygous dominant and as well as in the heterozygous condition. The recessive homozygous condition is not able to express this trait.
Steven can roll his trait, this means his genotype is either homozygous dominant or heterozygous. The wife is recessive for the trait. Their son cannot roll his tongue, this means the Steven is heterozygous dominant. If the Steven is homozygous dominant his son will be able to express the trait.
Thus, the answer is Steven has heterozygous genotype.
Proteins are made up of chains of small organic molecules called amino acids such as glycine, alanine, lysine or tryptophan.