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]
2 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]2 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
What did Mendels crosse pollination of pea plants prove?
AveGali [126]
C. Pea plants can have yellow seeds or green seeds
4 0
3 years ago
What happens when the top predator is removed from an ecosystem?
Tema [17]
The number of consumers increases
6 0
3 years ago
Read 2 more answers
FASSST!!!physical science!!!!!
jeka94

Answer

#21

2 for NaF

1 For Br2

2 For NaBr

1 for F2

#22

1 for P4

3 for O2

2 for P2O3

Explanation:

7 0
3 years ago
An action potential in an excitatory presynaptic nerve. 2. an _____ in the dendrites of the postsynaptic nerve. 3. this spreads
LUCKY_DIMON [66]
An action potential is an excitatory presynaptic nerve. An EPSP (Excitatory postsynaptic potential) takes place in the dendrites of the postsynaptic nerve. This spreads passively to the axon hillock. Depolarization of this region opens voltage-gated ionic channels. Sufficient membrane depolarization to threshold opens enough to these channels to produce an action potential.
Non myelinated axon; the currents associated with the action potential spread to the depolarized region of the axon.
In myelinated axon; the currents associated with the action potential spread to the next Node of Ranvier.
The action potential travels down the axon to the axon terminals.
6 0
3 years ago
Read 2 more answers
Mica has one direction of ___<br> so it breaks into sheets.
dimaraw [331]

Answer:

3

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • During what period of time could a stimulus to the heart cause a life-threatening arrhythmia?
    10·2 answers
  • The discovery of seafloor subduction processes gave evidence to tectonic theory because it explains how the seafloor can be expa
    12·2 answers
  • Chris is studying oxidation and reduction reactions. Which of the following could she use as an example of an oxidation reaction
    10·1 answer
  • Human activity has a great impact on the quantity and quality of local water supplies. Humans can try to increase awareness and
    10·1 answer
  • Matter is composed of ______
    11·2 answers
  • An individual is infected with a pathogen that absorbs nutrients from its environment. In which category does this pathogen belo
    6·1 answer
  • Julie was diagnosed with an aggressive tumor of the thyroid. Surgery was performed to remove the thyroid. However, post-operativ
    15·1 answer
  • Basis of immune system?​
    6·2 answers
  • 5. What type of energy is needed for active transport?
    13·2 answers
  • Phosphoglucokinase catalyzes the phosphorylation of the c6-oh group of g1p. why is this enzyme important for the normal function
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!