Answer:
Analogous structures are structures which serve similar function in different organisms and evolved independently in two living organisms while homologous structures are the structures which are similar in related orgnanism due to inheritance.
The wings of Pterodactyl, bats and birds are conisdered as analogous structure. <u>they are similar in structure and same in function and evolved independently in the two groups of animals.</u>
Bones in forelimbs of pterodactyl, bats and birds are considered homologous structures as <u>they inherited the pattern from a common ancestor and have different functions.</u>
Answer:
regulates which materials enter and leave the cell
Agonists activate the receptor thereby <u>increasing</u> activity at the synapse while antagonists generally prevent agonists from activating the receptors thereby <u>decreasing</u> activity at the synapse.
- An agonist is the component that has the ability to increase the activity carried out by another substance.
- The agonists work from their faculty of coupling to a cell-type receptor, in this way, they manage to generate a certain action in the cell.
- The antagonists are the compounds that cause the opposite when they bind to the receptor, they cause a blockade by decreasing the activation of a synaptic receptor.
Therefore, we can conclude that agonists are compounds capable of increasing the action of synapse and blockers (antagonists) decrease activity at the synapse.
Learn more here: brainly.com/question/11985070
Incomplete dominance is when the dominant allele is not fully dominant over the recessive allele. This results in three phenotype options rather than three. in this case T= tall, t= short and the two combined would be an intermediate height. A punnet square can help you figure this out.
T t
T TT Tt
t Tt tt
In this case you have one genotype that is two tall (TT) alleles. This will present as a tall plant.
The second genotype present is two short alleles (tt). You have one of these that will result in a short plant.
The third genotype present is one of each (Tt). This will result in an intermediate height plant. This shows up twice in the punnet square.
Based on this you will have 25% tall, 25% short and 50% intermediate.
