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
iris [78.8K]
2 years ago
12

To perform a testcross, scientists cross an organism with an unknown genotype with a _____ organism.

Biology
2 answers:
ivolga24 [154]2 years ago
8 0

The correct answer is homozygous recessive


-BARSIC- [3]2 years ago
5 0
To perform a testcross, scientists cross an organism with an unknown genotype with a homozygous recessive organism.

Hope this helped xx
You might be interested in
What does it mean to think in pictures, give<br> examples
Leno4ka [110]

Answer:

To think in picture is like visual thinking. When you are thinking in pictures you are have a visual image but instead of having it in front of you, it is. more like thinking about it inside you head. An example would be when people think of things like let's say dogs. Most people will think in pictures of an dog inside their mind. They will visualize how a dog would run around, and play fetch, etc.

8 0
2 years ago
BIOLOGY HOMEWORK
bulgar [2K]

Answer: The only reaction performed by chloroplast through its chlorophyll is photosyntesis. Therefore the chemical formular is below.

   C02         +          H20           →                   C6H1206    +       O2+           H20.

(carbondioxide) +    (Water)     Chlorophyll      (glucose)  +(oxygen)+     (water)

                                                       and                                                                                            

                                                   enzymes .                    

This is the single reaction of the process of photosynthesis.However two interconnected reactions are involved light dependent stage and light independent stage.

The first reaction takes place in presence of sunlight, and it is called Photolysis of water.it is the spiting of water to H+, electrons and Oxygen. This is  the source of oxygen seen above.

             4 H20→ 4H+ + 4e- + 02.

The light independent stage; the hydrogen ion from the photolysis is transfer to the light independent stage to reduce the C02 to produce glucose.In the first equation seen above.

Since chloroplast performs photosynthesis through action of its chlorophyll, The above reaction describes the chemical formula.

B.

The cell wall  of plants is made up of the middle lamella, the primary cell wall and the secondary cell wall .

<u>Cellulose</u><u> a complex carbohydrate is the major components</u>. It contains,  monomers of  glucose in small units  linked to one another by bonds.

C

Vacuole helps in plant turgidity needed for uprightness. when filled with water provides  turgor pressure increases as the cell membrane pushes against the cell wall. The resulted turgidity  helps the plants  to maintain resistance to external pressure and therefore resist the effects of gravity.

8 0
3 years ago
How to convert clesuis to kelvin
Kisachek [45]

Explanation:

Celsius can be converted to Kelvin by adding 273.15 to the Celsius grade!

3 0
2 years ago
Read 2 more answers
In a food chain 200 kg of wheat is fed on by 18 kg of mice which in turn are eaten by 1kg of hawk. What is the percentage energy
Nikolay [14]

Answer:

0.1% of energy

Explanation:

Energy flow: From the whole quantity of energy that reaches the earth's surface, autotroph organisms or producers absorb only 0.1 or 1%.

From the input of solar energy begins a unidirectional energy flow through all the organisms in the ecosystem, from autotrophs to heterotrophs, until it is dissipated in the environment.  

At each trophic level occurs an energy transfer to the next, with only 10% being usable in each of them. This assessment is called "The 10% rule". As a general rule, only about 10% of the energy stored as biomass at one trophic level, per unit time, ends up as biomass at the next trophic level, in the same unit of time.

If wheat transferred 10% of the energy to mice, and of that 10% mice transferred 10% of the energy to hawk, then the percentage of energy transferred from the first trophic level to the third equals 0.1%.

10% (1st TL-2nd TL) / 10% (2nd TL - 3rd TL) = 0.1% (1stTL - 3rd TL)

<em>TL = Trophic level           </em>

8 0
3 years ago
What is an example of an alternate path in the rock cycle​
tatiyna
An example of an alternate path in the rock cycle could be sedimentary rock goes through melting and becomes magma.
6 0
2 years ago
Other questions:
  • What is the weakest part of a chicken its for a project
    9·1 answer
  • Why are external barriers important to our immune system?
    14·1 answer
  • Why does light change direction when shined through water?
    10·1 answer
  • Why are fences put along some beaches ?
    14·2 answers
  • Which of these animals was unable to adapt to a warmer climate?
    11·2 answers
  • Life would not be possible on earth without the water that covers much of its surface and the air that surrounds it, earth water
    9·1 answer
  • Plz help me with this.....
    5·1 answer
  • Give three examples that show the importance of gravity to humans.​
    14·1 answer
  • How does tiered pricing differ from taxation?
    6·2 answers
  • PLEASE HELP ME WILL MARK BRAINLIEST LIKE GIVE ME THE REAL ANSWER
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!