--%>
Assignment Help - homework help

Hypothesis-vertebrates evolved from echinoderms

Suppose a scientist is testing the hypothesis which vertebrates evolved from echinoderms. Having a research object a lately found protochordate species, what is an illustration of a discovery which would weaken the hypothesis? What is an illustration of a discovery which would strengthen it?

E

Expert

Verified

Hypothesis to be tested: Vertebrates developed from echinoderms. Testing material: A recently found protochordate species (that is, a vertebrate forerunner). Illustration of weakening observation (which puts the latest protochordate species evolutionarily far from echinoderms): “The new species is protostome”, as opposed to echinoderms, which are deuterostomes. This observation brings the suspicion which deuterostomy in vertebrates is independent in beginning from echinoderms.

Illustration of strengthening observation (which nears the latest protochordate species to echinoderms): “The latest species has secondary radial symmetry”, identical to echinoderms. This observation forms stronger the hypothesis which echinoderms and vertebrates are relatives. (This item exhibits how science works, starting with the placement of hypothesis and additional observational testing.)

   Related Questions in Biology

  • Q : Population of secondary consumers of

    In short range what will take place to the levels below and above a population of secondary consumers of the numeric pyramid if a high number of individuals from this population die?

    		•
  • Q : PH of salivary secretion Specify the

    Specify the approximate pH of salivary secretion? Whether it is an acid or basic fluid? List the main functions of the saliva?

    		•
  • Q : Types | Channels of Communication -

    Communication in an organization carries innumerable kinds of messages which may be difficult to map out; but it may be possible to classify communications in regard to how to transmit. Or who communicates to whom, or what kinds of relationships communication develop. Thus, communication may be g

    		•
  • Q : General Strategies-Banking Industry

    General Strategies: General Strategies that can be adopted by banks/organization can be divided into three subheadings. These are discusses as below.People: For continuous growth they should be able acquire motiva

    		•
  • Q : Difference between the endocrine and

    What is the basic difference between the endocrine and the exocrine gland?

    		•
  • Q : Reasons for uneven distribution of the

    Briefly describe the reasons for uneven distribution of the population?

    		•
  • Q : What is notochord What is meant by the

    What is meant by the notochord? How this structure is formed?

    		•
  • Q : Swallowing the food through the

    Specify the type of muscle tissue that helps in order to push the food down through oesophagus?

    		•
  • Q : Name the main cells of nervous system

    Name the main cells of nervous system? Answer: The main cells of nervous system are the neurons. In addition to the neurons, the nervous system is as well constitute

    		•
  • Q : Audio-visual Communication -

    This type of communication combines the auditory and the visual, that is, while people are observing something on the television or cinema screen, they are also hearing narrative or descriptive remarks so that what they see is adequately supplemented and there is a more abiding impression on thei

    		•