Answer:
The correct answer is - Take blood samples and use DNA evidence to determine a more complete phylogenetic tree
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Explanation:
Scientists could not use DNA evidences to make a complete phylogenetic tree of Icthyosaur as there are no blood samples or other DNA molecules to create DNA printing or mapping to create phylogeny with the modern dolphins. They only can be make similarities based on the morphological characteristics of these two groups.
Thus, the correct answer is - Take blood samples and use DNA evidence to determine a more complete phylogenetic tree
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Male reproductive system is mostly located outside to the body. The seminal vesicles are found only on the posterior wall of the bladder wall.
<h3>What are seminal vesicles?</h3>
Seminal vesicles are gland which is present in the male reproductive part and produces the fluid that makes semen.
These are located in the posterior wall of the urinary bladder. It is mainly associated with sperm formation.
Thus, it can be concluded that the male reproductive system is only found on the posterior bladder wall is seminal vesicle.
For more details regarding seminal vesicles, visit:
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Answer:
A.the nervous system gathers,interpret and respond to information about the body's internal and external environment
Explanation:
the nervous system is a highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body
Option B)
They prevent most of the Sun's rays from reaching Earth, thereby preventing Earth from heating up
The operon is effectively the center of transcriptional control. In addition to its main structural genes, the operon houses an operator and a promoter. In front of the promoter lies a regulatory gene that produces repressor proteins. When a repressor is in its active state, it binds to the operator.
Hope this helped.
