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.
21,943,022 questions answered
Popular Conversations
The Dietary Guidelines for Americans include all of the following ...
Weegy: D. do not drink alcoho User: What components of a food label can help consumers compare the amounts of ...
8/29/2015 2:28:18 AM| 2 Answers
Which of these religions is ...
8/29/2015 5:14:54 AM| 1 Answers
Who was at the top of the caste ...
8/29/2015 5:35:57 AM| 1 Answers
Weegy Stuff
S
P
C
L
P
L
1
P
P
1
P
1
P
L
P
R
Points 1278 [Total 11631]| Ratings 7| Comments 1208| Invitations 0|Offline
S
L
Points 798 [Total 1113]| Ratings 1| Comments 788| Invitations 0|Offline
S
1
L
L
Points 754 [Total 9222]| Ratings 3| Comments 714| Invitations 1|Offline
S
L
L
P
1
Points 737 [Total 9310]| Ratings 2| Comments 717| Invitations 0|Offline
S
Points 541 [Total 767]| Ratings 1| Comments 531| Invitations 0|Offline
S
Points 242 [Total 250]| Ratings 0| Comments 242| Invitations 0|Offline
S
Points 224 [Total 224]| Ratings 3| Comments 194| Invitations 0|Offline
S
Points 214 [Total 533]| Ratings 1| Comments 204| Invitations 0|Offline
S
Points 178 [Total 255]| Ratings 0| Comments 178| Invitations 0|Offline
S
Points 144 [Total 175]| Ratings 0| Comments 144| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2015 Purple Inc.