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1) Name 8 characters possessed by monkeys. which areapomorphies, pleisomorphies, and synapomorphies?

2) What type of fertilization does a sea anemone, planaria, andlobster have?

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Nestor Rutherford
Nestor RutherfordLv2
29 Sep 2019

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Related questions

With reference to flatworms answer the following parts :

a.What are the best known representatives of the Platyhelminth phylum?

b. What is the main external morphological feature that differentiates platyhelminthes from other worms (nematodes)?

c.How many germ layers make up the body of platyhelminthes? How are they classified according to this feature?

d.What are the types of digestion and digestive system of platyhelminthes?

e.How are nutrients distributed by the digestive system in planaria?

f. How is gas exchange carried out in flatworms?

g.Poriferans and cnidarians do not have excretory systems. Do platyhelminthes have an excretory system?

h.What is an example of a freshwater flatworm? What physiological problem must these animals solve when living in that environment?

i.Is the nervous system of platyhelminthes more or less sophisticated than that of cnidarians1? What are the main neural structures found in flatworms? How is this neural organization important for the diversity of ecological niches explored by species of the phylum?

j.What is cephalization? How does lateral symmetry favor cephalization?

k.Do platyhelminthes use sexual or asexual reproduction?

l.How can asexual reproduction in planaria be described?

m.Are flatworms monoecious or dioecious?

n.Is it possible for a hermaphrodite species to carry out cross-fertilization?

o.What is direct development? Do planaria have a larval stage?

p.Into which classes are platyhelminthes divided? How can these classes be described and what are some representative species in each of them?

q.What are the main human diseases caused by platyhelminthes?

1/Recombinant plasmids are engineered so that they can replicatein the cell independently of the chromosome replication. Why is itimportant to have multiple copies of a recombinant plasmid within acell?

2/How is the information encoded in the rfp gene expressed as atrait? Be sure to use what you have previously learned about geneexpression and the relationship between DNA, RNA, protein, andtraits.

3/Why is it possible for bacteria to make a human protein, suchas insulin, or a sea anemone protein, such as the red fluorescentdye?

pleas pleas do all parts

1-Are both the egg and zygote of a sea star the same size?

2-Do the cells of a two-cell sea star embryo differ in size?

3-Does the sea star embryo appear to be growing during cleavage?

4-What structures will the archenteron develop into?

5-What obvious visual change occurs in a frog egg upon fertilization?

6-How is the orientation of the blastocoel in an amphibian blastula different than that of a sea star?

7-What structures will form from the neural fold of the frog embryo?

8-In a chick embryo at gastrulation, what does the primitive streak indicate?

9-What are the segmented units that are visible along the dorsal axis of the 33 hour chick embryo?

10-The basic stages of development are quite similar for a wide range of organisms. How would you explain such consistency?

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