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
mr_godi [17]
3 years ago
11

How do fraternal twins form

Biology
1 answer:
Rzqust [24]3 years ago
3 0

Answer:

D. Two eggs are fertilized by two sperm.

Explanation:

Fraternal twins are dizygotic or multiviteline, that is, they are formed from two eggs and fertilized by two sperm.

In this case two oocytes are produced and both are fertilized, thus forming two embryos. They are almost always formed in different placentas and do not divide the amniotic sac.

Fraternal twins are not very similar to each other, may or may not have the same blood factor, and may or may not be of the same sex.

They are also popularly known as different twins. In fact they are two ordinary (not identical) brothers who had a coincident gestation.

You might be interested in
I need help asap!! thank you very much
Ber [7]

Answer:

the third option, commensalism

Explanation:

5 0
3 years ago
Olfactory information is first received by which part of the brain? olfactory information is first received by which part of the
telo118 [61]
<span>Olfactory glands coat the olfactory epithelium with a pigmented mucus. They are responsible for the olfactory information, which is a term that describes the smell . </span>Olfactory information is first received by the cerebrum. <span>The </span>cerebrum is a large part of the brain, <span>the uppermost region of the central nervous system </span><span>that is responsible for olfaction, or the sense of </span>smell.
7 0
3 years ago
How mutation cause colorectal cancer​
Veseljchak [2.6K]

Answer:

  • A very small portion of colorectal cancers are caused by inherited gene mutations. Many of these DNA changes and their effects on the growth of cells are now known. For example: Familial adenomatous polyposis (FAP), attenuated FAP (AFAP), and Gardner syndrome are caused by inherited changes in the APC gene.
3 0
3 years ago
What is a carbon footprint?
maks197457 [2]
A.
the amount of carbon dioxide and other carbon compounds emitted due to the consumption of fossil fuels by a particular person, group, etc.
5 0
4 years ago
Read 2 more answers
Calculate the volume change for respiration in the dark. As you already saw from earlier questions, oxygen production is fairly
Tatiana [17]

Answer:

-1.9mL/min

Explanation:

The rate of O₂ production can be calculated by the formula

= ( Final volume - initial volume)/time(min).

From the graph provided and attached below, the rate of O₂ production or rate of photosynthesis at light intensity of 8 is about 3.75 mL/min.  

The rate of O₂ production is taken as the rate of photosynthesis. It is expected to progressively increase from light intensity 0 as light intensity increases. However, at very high light intensity, the rate slows down as water becomes limiting and the stomata closes in order to conserve water.

Question in order

Experiment 2: Respiration in the Dark

Calculate the volume change for respiration in the dark. As you already saw from earlier questions,

oxygen production is fairly constant. You will not need to calculate the individual volume changes.

Just subtract the original volume at 00:00:00 from the final reading at 00:02:00. Record your answer

for use in a later question.

<em>Note: depending on when you started the timer there is a range of possible answers. Pick the answer that is closest to this</em>

What was the volume change for respiration in the dark?

Correct answer:

-1.9 mL/min

7 0
3 years ago
Other questions:
  • Segments of transferred from parent to offspring are called genes.
    14·2 answers
  • What is the SI unit of measure for sound intensity
    10·1 answer
  • Which of the following cranial nerves is mispaired?
    14·1 answer
  • 2. Codominance: Diricrawls are plump, fluffy-feathered, flightless birds. Feather color
    5·1 answer
  • dexter is doing a report on a prokaryotic organism. He has stated that this organism is unicellular and contains cytoplasm. Whic
    6·1 answer
  • If there is no oxygen present, a cell can make 2 ATP from one glucose molecule. <br> True<br> False
    12·1 answer
  • If a diploid cell has 20 chromosomes, how many chromosomes will be in its haploid cell? If a germ cell has 10 chromosomes, how m
    15·1 answer
  • 5) Compare and contrast creationist views of life origination on Earth,
    15·1 answer
  • What are substrates in biology
    12·1 answer
  • An atom whose valence electrons conform to the octet rule is:
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!