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
Contact [7]
2 years ago
5

All of the following are true of spermatogenesis EXCEPT: Question 18 options: DNA replicates once, but cells divide twice. The p

roducts are spermatozoa that each have a head, midpiece and tail. Spermatids containing 23 chromosomes (1n) are produced. One spermatogonium produces 4 spermatids Genetically diverse spermatids are created.
Biology
1 answer:
jolli1 [7]2 years ago
4 0

Answer:

  • One spermatogonium produces 4 spermatids FALSE. One primary spermatocyte produces 4 spermatids.

Explanation:

Germ cells are diploid reproductive cells in charge of gamete production. Germ cells divide by mitosis and meiosis. Through mitosis, they originate more sexual cells, but through meiosis, they produce gametes -sperm and egg cells-. This process is known as gametogenesis.

Gametes´destiny is to merge during fecundation, and a new diploid cell called zygote emerges through fertilization. The zygote is a complete cell and suffers successive mitosis to form the new organism.

Spermatogenesis is the process of production and maturation of sperm cells. Spermatogonia are the masculine diploid germ cells, carrying 46 chromosomes. These germ cells suffer mitosis to reproduce. Some of them stay as spermatogonia, and some others become primary spermatocytes, which are in charge of gamete production. Primary spermatocytes are also diploid cells, meaning that they still carry 46 chromosomes.

Each primary spermatocyte replicates its genetic material and then goes through meiosis I to produce two daughter haploid cells called secondary spermatocytes, each of them carrying 23 chromosomes. Each secondary spermatocyte will produce two other haploid daughter cells by meiosis II.

The total result from the two cellular divisions of each primary spermatocyte is four haploid daughter cells called spermatids.

During spermiogenesis, spermatids mature into spermatozoa or sperm cells. Each sperm cell characterizes by being composed of a head, midpiece, and tail.

  • DNA replicates once, but cells divide twice TRUE
  • The products are spermatozoa that each have a head, midpiece, and tail TRUE  
  • Spermatids containing 23 chromosomes (1n) are produced TRUE
  • One spermatogonium produces 4 spermatids FALSE. One primary spermatocyte produces 4 spermatids.
  • Genetically diverse spermatids are created TRUE
You might be interested in
PLEASE HELP WILL GIVE BRAINLIST
crimeas [40]

Answer:

its ethier 325 or 400

Explanation:

3 0
3 years ago
Read 2 more answers
The PCR technique requires a DNA polymerase from an organism that can endure high heat, such as Thermus aquaticus. What step of
DENIUS [597]

Answer:

Extension

Explanation:

Polymerase chain reaction is given by Kary Mullis and it contains three steps denaturation, annealing, and extension. In denaturation, the temperature is raised to 96° c so that the DNA can denature.

In annealing, the temperature gets reduced to 55°c so that the primer can bind to the complementary sequence. In extension, Taq polymerase is used to extend the new strand.  

This enzyme is isolated from thermophilic bacteria and the temperature here is raised to 72°c so that the enzyme can extend the primer and make the complementary strand. So the right answer is extension.

5 0
2 years ago
What are three clues that something you are reading is false
Paul [167]

1. No credible source

2. Check if its a biased answer

3. Examine evidence

6 0
3 years ago
How do bacteria enable a baby to extract nutrition from the mother's milk?
Firlakuza [10]

Answer:

Lots of bacteria are present as the microflora of a baby's gut which helps it to extract the nutrition from mother's milk and also helps the baby to maintain a low number of pathogenic bacteria in its gut.

Some bacteria present in the baby gut release enzymes like glycoside hydrolase which helps baby to digest carbohydrate present in the mother's milk.  

Bacteria like Bifidobacterium, Streptococcus, Staphylococcus are already present in breast milk which helps in making gut microflora of baby and this gut microflora helps in extracting nutrients from mother's milk.

4 0
3 years ago
Cecilia critiqued the pamphlet. Which statement best describes a problem with the pamphlet that Cecilia found?
erastova [34]
Is there any answer choses ????

6 0
3 years ago
Other questions:
  • What does it mean if something has a visible nuclei
    12·1 answer
  • During the Industrial Revolution, the dark peppered moth had an advantage because it
    5·2 answers
  • What role do starch and glycogen play in living things??
    13·2 answers
  • Widespread of hunting predators may result in
    13·1 answer
  • The tendency to view one’s own culture and group as superior is called
    8·2 answers
  • Which of the following is used as evidence in supporting the idea that life changes over time? the big bang theory the existence
    10·2 answers
  • Describe how an amino acid molecule passes from the lumen of the ileum to the liver​
    14·1 answer
  • How can mutations affect organisms
    9·1 answer
  • (i givs brainliest ovo + 50 points) Which of the following is an example of static electricity?
    14·2 answers
  • What is the main energy source for ocean currents that move large volumesof water around the planet?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!