Question and answer
5 advantages and disadvantages of complexity in higher organisms
The complexity of higher organisms, which arises in the course of embryonic development from the much simpler fertilized egg, does not emerge by spontaneous generation nor by miracle. Such complexity must somehow be preexistent in the egg. [ Since the structure of organisms is genetically transmitted, it is DNA itself, the support of genetic information, that encodes this complexity. Here we
propose a model of organization of the genome in DNA loops maintained by DNA crossings. In this model DNA sequences that do not encode proteins, which represent more than 98% of the human genome, are involved in the definition of DNA crossing points and can no longer be considered as junk, but instead play a fundamental part in the encoding of genetic information by modulating the transcriptional state of genome domains. ............ ]
Get an answer
Original conversation
User: 5 advantages and disadvantages of complexity in higher organisms

Weegy: The complexity of higher organisms, which arises in the course of embryonic development from the much simpler fertilized egg, does not emerge by spontaneous generation nor by miracle. Such complexity must somehow be preexistent in the egg. [ Since the structure of organisms is genetically transmitted, it is DNA itself, the support of genetic information, that encodes this complexity. Here we propose a model of organization of the genome in DNA loops maintained by DNA crossings. In this model DNA sequences that do not encode proteins, which represent more than 98% of the human genome, are involved in the definition of DNA crossing points and can no longer be considered as junk, but instead play a fundamental part in the encoding of genetic information by modulating the transcriptional state of genome domains. ............ ]
sujaysen|Points 2733|

User: in a tabular form 5 advantages and disadvantages of complexity in higher organisms

Weegy: The evolution of biological complexity is an important outcome of the process of evolution. [ [ Evolution has produced some remarkably complex organisms - although the actual level of complexity is very hard to define or measure accurately in biology, with properties such as gene content, the number of cell types or morphology all being used to assess an organism's complexity.[1][2] This observation that complex organisms can be produced from simpler ones has led to the common misperception of evolution being progressive and having a direction that leads towards what are viewed as "higher organisms".[3] Nowadays, this idea of "progression" in evolution is regarded as misleading, with natural selection having no intrinsic direction and organisms selected for either increased or decreased complexity in response to local environmental conditions.[4] Although there has been an increase in the maximum level of complexity over the history of life, there has always been a large majority of small and simple organisms and the most common level of complexity (the mode) appears to have remained relatively constant. Contents [hide] 1 Selection for simplicity and complexity 2 Types of trends in complexity 3 History 4 See also 5 References [edit]Selection for simplicity and complexity Organisms that reproduce more quickly and plentifully than their competitors have an evolutionary advantage. Consequently, organisms can evolve to become simpler and thus multiply faster and produce more offspring, as they require fewer resources to reproduce. A good example are parasites such as Plasmodium - the parasite responsible for malaria - and mycoplasma; these organisms often dispense with traits that are made unnecessary through parasitism on a host.[5] A lineage can also dispense with complexity when a particular complex trait merely provides no selective advantage in a particular environment. ] ]
Expert answered|uxiali|Points 718|



Question
Asked 10/13/2012 10:49:46 AM
0 Answers/Comments
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
18,394,780 questions answered
Popular Conversations
A product is
11/20/2014 6:12:42 PM| 8 Answers
Which equation below is a direct variation? A. 1/6x=y B. x + 2 = ...
Weegy: An example of a quadratic equation is y = x^2 - 5 User: The value of y varies directly with x, and y = 4 ...
11/20/2014 7:27:37 AM| 4 Answers
0.0872
Weegy: Scientific notation of 0.0872 is 8.720 10^-2. User: 0.48 Weegy: what you need to know my friend? User: ...
11/20/2014 6:57:30 AM| 2 Answers
Which equation below is a direct variation? A. B. x + 2 = y C. y ...
Weegy: The equation of the line that passes through the points ( 2, 2) and (0, 5)is B. y = 3/2x + 5 User: The value ...
11/20/2014 7:40:11 AM| 2 Answers
The legs of a right triangle have lengths of 4 and 5 units. Find the ...
Weegy: The length of the hypotenuse of a right triangle whose legs are 3 and sqrt 2 is sqrt [3^2 + (sqrt 2)^2] = sqrt ...
11/20/2014 9:03:43 AM| 2 Answers
Is the ordered pair (0,5) a solution of the system of linear ...
Weegy: yes, the ordered pair (0,5) a solution of the system of linear equations: x + y = 5 -5x + 2y = 10. 0 + 5 = 5, ...
11/20/2014 9:19:10 AM| 2 Answers
Find the slope and y-intercept of the line. y = –2x + 8 (Points : ...
Weegy: y = mx + b where m is the slope of the line and b is the y intercept ... equation of the line with slope m 1. y ...
11/20/2014 10:00:11 AM| 2 Answers
Weegy Stuff
S
L
1
L
P
C
1
P
C
1
L
P
C
1
Points 2149 [Total 13860]| Ratings 10| Comments 2049| Invitations 0|Online
S
L
Points 1165 [Total 3451]| Ratings 0| Comments 1165| Invitations 0|Offline
S
1
L
1
L
P
P
L
P
Points 644 [Total 14018]| Ratings 0| Comments 644| Invitations 0|Offline
S
L
Points 635 [Total 1156]| Ratings 6| Comments 575| Invitations 0|Offline
S
Points 352 [Total 384]| Ratings 1| Comments 342| Invitations 0|Offline
S
1
L
L
Points 211 [Total 6605]| Ratings 0| Comments 211| Invitations 0|Offline
S
L
Points 143 [Total 1439]| Ratings 3| Comments 113| Invitations 0|Offline
S
Points 50 [Total 50]| Ratings 0| Comments 0| Invitations 5|Offline
S
Points 37 [Total 37]| Ratings 0| Comments 37| Invitations 0|Offline
S
Points 34 [Total 34]| Ratings 2| Comments 4| Invitations 1|Online
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.