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
MrRissso [65]
3 years ago
7

Which of the statements is true? Dizygotic twins must be of the same gender, but monozygotic twins can be of different genders.

The tendency to produce monozygotic twins often runs in families and is influenced by genetic factors, whereas genetic factors seem to have no impact on the occurrence of dizygotic twins. Monozygotic twins develop from one egg fertilized by two sperm, whereas dizygotic twins develop from two eggs fertilized by one sperm. Dizygotic twins, on average, have 50% of their genes in common, whereas monozygotic twins have 100% of their genes in common. Dizygotic twins usually look more alike than do monozygotic twins.
Biology
1 answer:
vodka [1.7K]3 years ago
3 0

Answer: D.

Explanation:

Dizygotic twins are formed due to the fertilisation of two eggs by two sperms which get implanted in the uterus and develops two fetuses, that s why they have 50% of genes in common. whereas  monozygotic twins form from a single fertilized egg that splits and so they have 100% of their genes in common.

Hence, the correct statement is D.

You might be interested in
Match the number to the organ in the correct order to match the flow of air in and out of the respiratory system.
oee [108]

Answer:

Nose, Trachea, Bronchi, Lungs (for inhalation)

Explanation:

Just reverse the answer for order of exhalation

3 0
2 years ago
Citrus trees are angiosperms and dicots. Which characteristic would citrus trees have? a) flower petals in multiples of three b)
nataly862011 [7]

The correct answer is b) herbaceous or woody stems..

i just took the test and got it right

trust.


6 0
3 years ago
_____ is 10 to 20 times higher inside the cell, and _______ is 10 to 20 times higher outside the cell.
wolverine [178]

Potassium is 10 to 20 times higher inside the cell, and sodium is 10 to 20 times higher outside the cell. The potential difference across the cell is important in several processes such as transmission of nerve impulses and maintain the ion balance.

The sodium concentration higher out side and potassium higher inside the cell then it moves two potassium into the cell where potassium levels are high and pump three sodium ions out of the cell and into the extracellular fluid.

This is due to action of membrane active transport system which pumps sodium out of the cell and potassium into it. Both helps in body maintain flid and blood volume so it can function normally.

To learn more about active transport system here

brainly.com/question/15454163

#SPJ4

5 0
1 year ago
Some dairy farmers want to increase the amount of milk produced by their cows. How can the farmers use selective breeding to inc
NikAS [45]

Answer:

I would say B.By choosing cows that are high milk producers

this is just my guess tho

7 0
3 years ago
When sunlight strikes Earth, approximately
VikaD [51]

Answer:

The answer is A

Explanation:

4 0
3 years ago
Other questions:
  • Which of the following terms describes all of the non-living components of an ecosystem
    6·2 answers
  • "a condition in the brain, heart or other body arteries in which there is a bulge on the wall of the artery that can cause dange
    10·1 answer
  • Why is mitosis also called asexual reproduction?​
    5·1 answer
  • During embryonic development, if the anus develops before the mouth, the organism is a _____.
    12·1 answer
  • The initial increase in heart and breathing rates during the skin diving trip was probably a result of: a. activation of the sym
    8·1 answer
  • How does erosion effect the lithosphere
    10·1 answer
  • What is the relationship between mass and force?
    5·1 answer
  • Marine biomes are divided into ecologically distinct zones depending on
    5·2 answers
  • Replication is when DNA is?<br> O Mutated<br> O Changed<br> O Copied<br> O Destroyed
    14·1 answer
  • Which of the following is most helpful for identifying an organism using a dichotomous key?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!