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
SOVA2 [1]
3 years ago
11

Analysis of the data obtained shows that two students each have two fragments, two students each have three fragments, and two s

tudents each have one only.
What does this demonstrate?
Biology
1 answer:
Readme [11.4K]3 years ago
6 0

Question: Please use the following information to answer the question(s) below.  A group of six students has taken samples of their own cheek cells, purified the DNA, and used a restriction enzyme known to cut at zero, one, or two sites in a particular gene of interest.

Analysis of the data obtained shows that two students each have two fragments, two students each have three fragments, and two students each have one only. What does this demonstrate?

Answer:

"The two students who have two fragments have one restriction site in this region."

Explanation:

A restriction enzyme, restriction endonuclease, or restrictase is an enzyme that cuts DNA into trashes at or close precise appreciation sites inside particles identified as restriction locations. Restriction enzymes are one session of the wider endonuclease collection of enzymes. In the laboratory, restriction enzymes (or restriction endonucleases) are used to cut DNA into minor trashes. The scratches are constantly made at exact nucleotide arrangements. Unlike restriction enzymes recognise and cut diverse DNA sequences.

You might be interested in
Help plz. Thanks. Only answer if you know it plz.
Irina18 [472]

Answer:

Each one is fromt the plant cell

Explanation:

3 0
3 years ago
2 Points
Savatey [412]

Answer:

a

Explanation:

7 0
3 years ago
Read 2 more answers
All of the following are true of spermatogenesis EXCEPT: Question 18 options: DNA replicates once, but cells divide twice. The p
jolli1 [7]

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
4 0
3 years ago
What factors influence the amount of DNA you have?
Free_Kalibri [48]

The factors are: The size of the sample, the extraction method, the method of purification and preservation of the DNA.

The quantity and quality of DNA can be greatly improved by performing PCR.

* Purification of nucleic acids is a key step for functional studies in biology. Because of the great diversity of living organisms in nature, purification becomes a real challenge for researchers, especially cell lysis.

The evolution of lysis methods has made it possible to improve efficiency, speed and simplicity. But, this lysis step remains a crucial step for the efficiency and the quality of the purification.

5 0
3 years ago
Transfusion of the wrong blood type can cause:________. a. recipient antibody activating the complement cascade to attack the RB
IrinaVladis [17]

Answer:

C)All of the choices are correct.

Explanation:

The major blood types include; A, B,AB and O. Type A has A antigens, B has B antigens AB has both A and B antigens and O has neither.

A person's immune system produces antibodies against any antigens not found in his blood.

Before giving a blood transfusion, it is necessary to determine the blood type of the recipient and that of the donor so that blood can be appropriately matched. This is called blood typing. This helps prevent ABO incompatibility which might lead to several fatal symptoms and reactions. These include;

Fever and chills

Abdominal, back and chest pains

Jaundice

Nausea

Muscle pains

Systemic shock and organ failure.

6 0
3 years ago
Other questions:
  • A student sets up an experiment and wants to see if different amounts of fertilizer affect the growth of basil. They place 4 sep
    12·1 answer
  • Which statement is true fir some photosynthesizing animals?
    15·2 answers
  • Marta heard that a hormone is released when the stomach is distended that conveys the feeling of satiety to the brain. which hor
    9·1 answer
  • CAN SOMEONE ANSWER THESE QUESTIONS I WILL GIVE BRAINLIEST PLEASEEEE
    11·2 answers
  • When a population has a gene with two alleles circulating, how many possible genotypes are there?
    12·1 answer
  • What type of chemical energy is produced during photosynthesis
    6·2 answers
  • Which system does the thyroid gland use te distribute information to the cells of body
    15·2 answers
  • The San Andreas fault is an example of which kind of boundary? A. Transform B. divergent C. oceanic D. convergent​
    10·1 answer
  • Which of the following statements is TRUE?
    10·2 answers
  • PLEASEEEEEEEEEEE I NEED HELP I WILL MAKE YOU BRAINLIEST IF YOU GET THIS RIGHT.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!