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
NikAS [45]
3 years ago
15

In humans, a. How many sperm develop from 100 primary sper matocytes? b. How many sperm develop from 100 secondary spermatocytes

? c. How many sperm develop from 100 spermatids? d. How many ova develop from 100 primary oocytes? e. How many ova develop from 100 secondary oocytes? f. How many ova develop from 100 polar bodies?
Biology
1 answer:
Ugo [173]3 years ago
7 0

Answer:

In males primary spermatocytes undergo two meiotic divisions. First meiotic division give rise to two secondary spermatocytes and secondary meiotic division give rise to four spermatids from two spermatocytes.  

Therefore a. from 100 primary spermatocytes 400 sperms will develop (100*4= 400)

.

b. From 100 secondary spermatocyteS 200 sperms will develop(100*2= 200).

c. Spermatids do not undergo any further division rather they undergo differentiation to form mature sperms. Therefore from 100 spermatids, 100 mature sperms will develop.

d. One primary oocyte gives rise to one secondary oocyte and one secondary oocyte give rise to one mature ova so only one mature ova will develop from 100 primary oocytes.

e. 100 ova will develop from 100 secondary oocytes.

f. Polar body do not develop into ova and degenerates after some time so no ova will develop from 100 polar bodies.

You might be interested in
Wheel bearings are being packed with grease. technician a says to use grease that is labeled "g &quot for severe duty. techn
qaws [65]
TECHNICIAN 2 IS CORRECT.
Wheel bearing is typically used for guiding and supporting shafts and sometimes axles. Wheel bearing has its own special grease, which is specifically designed for high friction surfaces. Most bearing wheels in cars and trucks are typically lubricated with NLGI {National Lubricating Grease Institute] Number 2.  Effective lubrication is needed to ensure that a wheel bearing has a long life.
8 0
3 years ago
Please help urgent due today
Serjik [45]

Answer:

Your answer is D.

Explanation:

Hope that answers your question.

7 0
3 years ago
Read 2 more answers
Food webs provide a more complete model of interactions in the ecosystem because-
Leya [2.2K]

Answer Food webs consist of many interconnected food chains and are more realistic representation of consumption relationships in ecosystems.

Explanation:

3 0
3 years ago
What is the purpose ( goal ) of getting vaccine?
mariarad [96]

Answer:

The purpose of vaccination is to produce immunity.

Explanation:

Immunity means the presence in a person's body of cells and substances known as antibodies that can produce a protective immune response.

6 0
3 years ago
Read 2 more answers
What might be some challenges of working in a forensic biology lab?
OleMash [197]

Answer/Explanation:

  • You would have to be very careful of cross-contamination. That means you would have to work very carefully and precisely with protective clothing, ensuring that none of your DNA (from skin or hair or even trace) gets into the sample you are working with
  • You would have to be very careful to check and record samples properly to ensure nothing got mixed up or mislabeled and this could be disastrous for criminal cases
  • All the material is very precious and sometimes only one sample exists, so you have to avoid making any mistakes. Experiments can't always be repeated.
5 0
3 years ago
Other questions:
  • Who is eligible for care within the veterans health administration?
    12·1 answer
  • Which of the following terms refers to a permanent change to DNA or RNA that is typically caused by damaged or changed bases? A.
    11·1 answer
  • The active site of an enzyme is the region that The active site of an enzyme is the region that binds allosteric regulators of t
    14·1 answer
  • In order to perform, a chemist needs an element that has similar properties to potassium (K) but has a lower atomic mass. which
    5·2 answers
  • 20 points and brainliest!! I NEED HELP!
    9·2 answers
  • Each spring when the worms reproduce, they have about 500 babies BUT only 100 of these 500 ever become old enough to reproduce.
    8·2 answers
  • What can occur nitrogenous bases do not pair correctly?
    14·1 answer
  • A landfill built on wetlands is an example of sustainable and environmental friendly waste disposal . True Or False​
    10·2 answers
  • Your Answer
    15·1 answer
  • Question 3 of 10
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!