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
Iteru [2.4K]
3 years ago
9

Compare and contrast homologous and analogous structures

Biology
1 answer:
melamori03 [73]3 years ago
5 0

Answer:  Analogous structures are those that have a similar function but whose origin is different. Homologous structures have the same function and also start from the same origin.

Explanation:

Convergence is the evolutionary phenomenon by which different organisms that are evolutionarily distant tend, under equivalent environmental pressures, to develop analogous characteristics.

Analogous structures are those that have a different evolutionary origin, but fulfil very similar functions. For example, the wings of a bird, the wings of a bat and the wings of an insect all are for the same thing (flight) but their phylogenetic origin is not the same. This means, they fulfill <u>similar functions by similar means, without having the same evolutionary origin.</u>

The development of homologous structures occurs through divergent evolution, where two related species change a common ancestral structure during their evolution in order to survive by performing different functions.

Then, if they have the same evolutionary origin, they are homologous. <u>So, if two structures have the same function by similar means and also start from the same origin, they are homologous structures. </u> For example, the extremities of vertebrates, similar skeletal structure, but for different uses.

You might be interested in
The ability of the human body to break down the red color in beets is controlled by an autosomal dominant allele. The inability
Zinaida [17]

Answer:

Explanation:

<em>Let the ability to break down the red color in beets be represented by the allele </em><em>B</em><em>. The inability would be represented by the allele </em><em>b</em><em>.</em>

A nonsecretor's genotype would be BB or Bb while a secretor's genotype would be bb.

A nonsecretor woman with a secretor father would be a carrier with genotype Bb. A nonsecretor man who in a previous marriage had a secretor daughter would also be a carrier with genotype Bb. If the two marries:

            <em>Bb     x     Bb</em>

<em>            BB    2Bb    bb</em>

1.

(a) probability of their first child will be a secretor girl = probability of having a girl and being a secretor.

Probability of having a girl = 1/2

Probability of being a secretor = 1/4

<em>probability of their first child will be a secretor girl</em> = 1/2 x 1/4 = 1/8

(b) Probability of their first child being a nonsecretor girl = probability of having a girl and being a nonsecretor.

Probability of having a girl = 1/2

Probability of being a nonsecretor = 3/4

<em>Probability of their first child being a nonsecretor girl = probability of having a girl and being a nonsecretor</em> = 1/2 x 3/4 = 3/8

2. <em>Probability that their first two children will be nonsecretors of either sex = probability of their first being a nonsecretor and of either sex and probability of their second being a nonsecretor and of either sex.</em>

  = 3/4 x 3/4 = 9/16

6 0
3 years ago
To report a code for hepatic capillariasis, the coder would report _____.
vekshin1

The icd-10-CM codes is International Classification of Diseases, Tenth Revision, Clinical Modification.

The icd-10-CM is used for the clinical manifestation of the diseases or the abnormalities detected during the treatment procedures. These codes are used for the reimbursement purpose of the treatment or the diagnostics provided.

B83.8 is a code for the hepatic capillariasis. The code B83.8 is used for billable diagnostics in the case of Helminths infection.

So, the given blank can be filled with B83.8.

8 0
3 years ago
Which element is a nonmetal?<br><br> A.Li<br> B.Ti<br> C.Ar<br> D.Ni
Daniel [21]

Answer:

Ar

Explanation:

Argon isn't with the metals on the periodic table

4 0
2 years ago
Read 2 more answers
State one way a complete blockage at location X would affect the reproductive process ? Please answer !!
Romashka [77]

Answer:

There would be no fertilization.

Explanation:

When the fallopian tube is blocked, even after ovulation (an egg released by the ovary), it will be unable to travel down the fallopian tube towards the uterus. This way, even when the sperm swim up to the tube (where fertilization  of the egg usually occur) after copulation, it will be unable to meet the egg and fertilize it. There will never be conception as long as there is blockage on location X.

8 0
3 years ago
1. What is sustainable energy? 2. How do we currently use energy in Georgia? 3. Which types of fossil fuels could / should we us
devlian [24]

1. Sustainable energy is the one that meets the needs of the present without compromising the possibility of future generations to meet their own needs for energy. This is actually an effective way of producing energy that has a little harmful effect on the environment. 

There are three conditions that some energy must satisfy in order to belong to the group: 

- ecologically: clean, renewable

- social: available for everyone  

- economic: provides at least the minimum profit

Sustainable energy includes the use of renewable energy sources such as hydropower, wind energy, solar energy, wave energy, geothermal energy, biomass energy.


2. In Georgia, the most of energy consumes transportation and industrial production is the second energy consumer in the country. There are many industrial plants that consume a lot of energy such as food and beverages, tobacco, chemical, plastics, wood, machinery and metal industry. Energy consumption by the population is almost identical to the consumption by industry.



3. We should use less coal and petroleum because they are the largest source of greenhouse gas emissions, like CO2 from fossil fuel combustion. Combustion of fossil fuels also produces other air pollutants, such as nitrogen oxides, sulfur dioxide, volatile organic compounds and heavy metals which damage our environment.


4. We should use more solar energy, wind energy, and geothermal energy. These sources of energy are inexhaustible and free, and the most important characteristic of the resources is that they do not pollute the environment. Also, it is a better choice to build own renewable energy facilities than import costly fuels.


5. In my area, I would propose next renewable energy sources: biomass, wind and solar power. Here, there is a flat land and during the year we have a lot of sunny and windy days. There is huge potential for producing the kinds of energy and it would be economically rentable. Also, it is a forest area with the great amount of biomass, which could collect and use for energy production instead of rotting on the ground.


6. We could do a lot of things to decrease energy consumption, starting from simple things like turning off the lights, using energy efficient light options (LED bulbs), unplugging electronics which use standby power, choosing energy-efficient items, better insulation of houses etc. Also, we could less drive own cars and use more public transport or ride bicycles.

3 0
3 years ago
Other questions:
  • PLEASE HELP I WILL REWARD BRAINLIEST !!! Need help asap
    11·1 answer
  • 4.8g of calcium is added to 3.6g of water. The following reaction occurs
    13·1 answer
  • Earths food chain starts with what type of organisms
    6·1 answer
  • Which of the following areas will most likely have the least surface run-off
    6·1 answer
  • PLS HELP (ASAP) PLS
    5·2 answers
  • Scenario #2
    9·1 answer
  • Describe the following methods of genetic engineering: gel electrophoresis,
    7·1 answer
  • Suppose you have the same mass of water and air. If you want to raise the temperature of water and air from 20°C to 30°C, which
    12·1 answer
  • Explain how subduction zones are formed.
    15·1 answer
  • How does Earth's global temperature affect sea level?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!