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
yaroslaw [1]
3 years ago
12

Down's syndrome is a condition where an extra chromosome is produced on the _____ chromosome.

Biology
2 answers:
AnnZ [28]3 years ago
4 0

Answer: On the Y chromosome

scoray [572]3 years ago
3 0

Answer: 21th

Explanation: Down syndrome a.k.a trisomy 21 because it’s caused by an extra copy of a chromosome 21.

Hope easy and helps! ^^

You might be interested in
*AQUATICS SCIENCE*
Luden [163]

Answer:

C

Explanation:

5 0
3 years ago
All pros when conducting a lab experiment except?
Mrac [35]

Answer:

I personally believe that lab experiments are useful and an effective way to test and gather data. Even though they can often lack ecological validity and mundane realism they can easily be replicated and results can be retested, helping to prove/disprove data, ultimately leading to the creation of practical applications.

  • That psychologist can make statements about cause and effect because they involve the deliberate manipulation of one variable while trying to keep the other variables constant, unlike non-experimental methods.
  • Lab experiments can also be replicated due to the standardised procedures and measures, ultimately making it easier to check the reliability of the research/results and prove/disprove results if the research is conducted by another researcher.

6 0
3 years ago
Which statement is incorrect about natural selection?​
MariettaO [177]

Answer:

A single organism can adapt to a cold environment by growing long hair.

Explanation:

3 0
3 years ago
Read 2 more answers
If a plant cell had a mutation such that the cyclic electron flow is observed at a much higher rate, which photosystem is most l
Ksenya-84 [330]

If a plant cell had a mutation such that the cyclic electron flow is observed at a much higher rate, which photosystem is most likely mutated such that energy is absorbed at a lower rate?

PSI

PSII

Answer:

PSII

Explanation:

Non-cyclic phosphorylation involves both PSI and PSII. The process starts with the splitting of water and excitation of electrons of the reaction center of PSII upon the absorption of solar energy at the wavelength of 680 nm. Any mutation in PSII would not allow the non-cyclic phosphorylation to occur when only cyclic phosphorylation would occur. The process of cyclic phosphorylation includes only PS I. Its reaction center absorbs maximum light at 700 nm and is cycled back while supporting ATP synthesis. Therefore, if a plant performs cyclic phosphorylation at a higher rate and absorbs less energy, this means that mutation was in PSII.

7 0
2 years ago
3 points
Flura [38]

Answer:

it will option D bcs force is zero

3 0
2 years ago
Other questions:
  • For what part of the day did only unicellular life-forms exist?
    9·1 answer
  • Please help ASAP!
    13·1 answer
  • Who has a larger vacule? plant cells or animal cells
    12·2 answers
  • What are the 4 levels of protien structure and function
    7·1 answer
  • The 13th amendment was proposed and ratified on 1865
    12·1 answer
  • One theory of dreaming says that the brain _____, or puts together, an explanation of the cortex activation from memories and ot
    13·1 answer
  • Mendel proved that genes are inherited as discrete units. <br> T or F?
    14·1 answer
  • A lumber company planting trees to replace ones that were cut down is an example of _____________ .
    8·1 answer
  • Why does the water in the ocean feel cold even though water holds heat?
    14·1 answer
  • Explain how materials enter and leave the cell. Make sure you use some terms like diffusion, osmosis, active and passive transpo
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!