1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Wewaii [24]
3 years ago
11

Anatomical features that are fully developed and functional in one group of organisms but reduced and functionless in a similar

group are termed Select one: a. vestigial. b. homologous. c. analogous. d. polygenic. e. sympatric.
Biology
1 answer:
Tju [1.3M]3 years ago
8 0

Answer:

Answer is option A.

Vestigial features are fully developed and functional in one group of organisms but reduced and function less in a similar group.

Explanation:

  • Vestigial structures are anatomical features such as cells, tissues or organs in an organism that are previously functional and performed some important functions in the organism but no longer serve any functions in the current form of the organism and become useless as a result of a large evolutionary change. Examples include the coccyx or the tailbone in humans, the pelvic bone of a snake, wisdom teeth in humans, nipples in human males, the wings of flightless birds such as kiwi, ostrich, etc.
  • Homologous features are the features that are similar in different organisms having similar embryonic origin and development and are inherited from a common ancestor that also had that feature. Also, they might have different functions. An example is the presence of four limbs in tetrapods such as crocodiles, birds, etc.
  • Analogous features are the features that are superficially similar in different organisms but had separate evolutionary origins i.e., different in origin, but similar in function. An example includes the wings on a fly, a moth, and a bird where the wings were developed independently as adaptations to perform the common function of flying.
  • Polygenic features are the traits or features that are controlled by multiple genes that are located on the same or different chromosomes and are also affected by the environment. These features do not follow Mendel’s pattern of inheritance and are represented as a range of continuous variation. Examples of polygenic traits or features include skin color, height, hair color, eye color, etc. For example, there is wide variation in the human skin color (from light to dark) and height (short or tall or somewhere in between).
  • Sympatry describes a species or a population that inhabit the same geographic region at the same time. In sympatric speciation, new species are evolved from a surviving ancestral species while both the species inhabit the same place at the same time i.e., in a single population, reproductive isolation occurs without geographic isolation.
You might be interested in
First part of brain to develop
ad-work [718]

Answer:

neural tube

Explanation:

5 0
3 years ago
Question 4 of 10
Marta_Voda [28]

Answer:

B

Explanation:

A child needs a beating heart to live, if not they cam't develop.

6 0
3 years ago
Read 2 more answers
For a particular species of wolf, 55% are female, 20% hunt in medium-sized packs, and 15% are both female and hunt in medium-siz
lorasvet [3.4K]
*Given
Percent of the wolves which are female - 55%
Percent of the wolves which hunt 
     in medium-sized packs                      - 20%
Percent of the wolves which are both
     female and hunt in medium-sized
     packs                                                  - 15%


*Solution

<u>Assuming that there is a total of one hundred wolves in the species, </u>

1. Since percent (%) means "per 100" or "for every 100" then, 

a. The number of female wolves is

    (55 female wolves / 100 wolves) * 100 wolves total = 55 female wolves

b. The number of wolves that hunt in medium-sized packs is

    (20 wolves / 100 wolves) * 100 wolves total = 20 wolves

    Note that the 20 wolves is a mixture of male and female wolves. 

c. The number of female wolves that hunt in medium-sized packs is

    (15 female wolves / 100 wolves) * 100 wolves total = 15 female wolves

2. Because there is a total of 55 female wolves in the species, and 15 of these wolves hunt in medium-sized packs, then the number of female wolves that do not hunt in medium-sized packs is, 
 
    55 female wolves total - 15 female wolves hunting  = 40 female wolves not
                                                in medium-sized packs         hunting in medium
                                                                                              sized packs

3. To find the proportion, we can express the answer in terms of percent (%) or in fraction, which is usually how proportions are expressed. 

For every 100 wolves, there are 40 female wolves that do not hunt in medium-sized packs. This can be expressed as a proportion of 
 
                                       <span> <u> 40  </u>
</span>                                        100

and simplified by dividing both the numerator and denominator by 10, we get,

                                     <span><u> 40/10  </u>
</span>                                     100/10

                                       <span><u>  4   </u>
</span>                                        10

When this is expressed in percent, we multiply the fraction or proportion by 100% to get, 

                                       <span><u>  4   </u>   x    100%     = 40%
</span>                                        10

Thus, the proportion of female wolves that do not hunt in medium sized packs is 4/10 or 0.4. When expressed as percent, this is 40%. 
  
5 0
3 years ago
HELP!!!! What are two ways information is sent to control body conditions?
Gwar [14]
nervous and chemical responses.
7 0
3 years ago
The anaerobic portion(s) of cellular respiration is (are):
Neporo4naja [7]

i believe it is a but please tell me if im wrong

8 0
3 years ago
Read 2 more answers
Other questions:
  • 2 ANSWERS/ WILL GIVE BRAINLIEST
    14·2 answers
  • What is not a step in most scientific investigations
    8·1 answer
  • What is a feature of bones that are still increasing in length?
    12·2 answers
  • Besides a veterinary surgeon, what other veterinary specialist is most directly involved in animal surgery?
    7·1 answer
  • A crosswise elongation of cells within the stem will produce?
    7·1 answer
  • If a corn plant has a genotype SsTt what are the possible genetic combinations that could be present in a single grain of pollen
    7·1 answer
  • Which structures are in the cytoplasm? Check all that apply.
    10·2 answers
  • The distribution of blood to various tissue areas is controlled mainly by the constriction and dilation of
    5·1 answer
  • Mrs. Cruz has blood type A, while his husband Mr. Cruz has blood type B. Their first and second child is type A and type B respe
    10·2 answers
  • ___, such as carbon dioxide and water vapor, are known to trap heat in earths atmosphere.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!