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
AleksandrR [38]
3 years ago
6

Explain what happens to the zona pellucida after the egg is fertilised ​

Biology
2 answers:
vodka [1.7K]3 years ago
8 0

write it in your own words:

"In humans, five days after the fertilization, the blastocyst performs zona hatching; the zona pellucida degenerates and decomposes, to be replaced by the underlying layer of trophoblastic cells. The zona pellucida is essential for oocyte growth and fertilization."

The zona pellucida supports communication between oocytes and follicle cells during oogenesis; protects oocytes, eggs, and embryos during development, and regulates interactions between ovulated eggs and free-swimming sperm during and following fertilization.

Lesechka [4]3 years ago
5 0

The blastocyst achieves zona hatching. The zona pellucida deteriorates and disintegrates, waiting for its replacement by the underlying layer of trophoblastic cells.

Once a sperm enters the zona pellucida, it connects and combines with the plasma membrane of the oocyte. Union occurs at the back region of the sperm head. The molecular characteristics of sperm-oocyte binding are not entirely resolved.

You might be interested in
Large quantities of proteins modified by the Golgi apparatus exit the cell through the process of
Nataly_w [17]
C. exocytosis
just think "exo" sounds like "exit". diffusion is mostly gases, endocytosis is coming in, and osmosis is water
5 0
3 years ago
Read 2 more answers
Give and example of resources a squirrel might need.
nadezda [96]
Food, shelter, water, are some things a squirrel will need to survive
6 0
3 years ago
Although scientific theories vary, it is believed that _____________________ caused the permian mass extinction.
crimeas [40]
D -<span>the start of glaciation and climatic changes</span>
4 0
3 years ago
Read 2 more answers
A trout finds food near the top of a river. It wants to find a safe place deeper under water to eat the meal. How does the swim
Zielflug [23.3K]

Answer:

When the bladder is completely deflated, the fish has minimum volume and sinks to the ocean floor

5 0
3 years ago
Read 2 more answers
Match the following. 1 . codominance Both members of an allelic pair contribute to phenotype producing a mixture of phenotypic t
STALIN [3.7K]

Answer:

1. codominance Both members of an allelic pair contribute to phenotype producing a mixture of phenotypic traits

2 . Rh factor: An inherited protein found on the surface of the red blood cell membrane

3 . hemophilia: A hereditary condition for bleeding due to the inability to clot properly

4 . holandric gene: A gene located on the Y chromosome in XY species

Explanation:

Codominance occur when a pure breeding White flower crosses with a pure breeding Red flower and gives PINK offspring

Rhesus Factor is an antigen that appears on the surface of red blood cells. it is an important factor to consider during blood transfusion.

Hemophilia is a sex-linked condition where the sufferer is unable to have a blood clot.

Holandric gene can ONLY be passed from males (carriers of XY chromosomes) to their sons

6 0
3 years ago
Read 2 more answers
Other questions:
  • You are the only person on the scene of an accident involving a child. you need to call 9-1-1 or the local emergency number, but
    7·1 answer
  • The integumentary system passes information from stimuli to the ___ system
    13·2 answers
  • What observations do you have about the bacteria cell​
    10·1 answer
  • The theory of evolution may have seemed reasonable when it was introduced because the complexity of the living cell was not unde
    13·1 answer
  • What could be used to treat an infection caused by Eubacteria?
    10·1 answer
  • Creativity helps a scientist by allowing him or her to
    5·2 answers
  • Why do you think some people still become ill even after taking strong precautions against an illness, such as receiving a vacci
    7·2 answers
  • In humans which of these types of cells generally do not divide after they have developed?
    5·2 answers
  • Describe the pathway of blood through the heart. Starting with blood entering the heart from the superior and inferior vena cava
    15·1 answer
  • A trophic pyramid for southern lake michigan coastal<br>please answer it
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!