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
Sedaia [141]
3 years ago
12

The genome of an organism is its total genetic material. What aspects of the genome can and cannot be determined through karyoty

ping?
Biology
1 answer:
Nina [5.8K]3 years ago
4 0
 Best Answer:<span>  </span><span>A karyotype is an actual photograph of the chromosomes from one cell. Karyotypes are usually done using blood cells, fetal skin cells (from amniotic fluid or the placenta) and occasionally bone marrow cells. While a karyotype is used to confirm that a person has Down syndrome due to an extra chromosome number 21, it actually gives much more information. 

From a patient’s perspective, a karyotype is a simple blood test. But what happens to the blood after it is collected is actually quite complex. This step by step guide will help you understand why it takes so long (up to a week) to get karyotype results. 


GENETIC DISORDERS 
What a karyotype tells us 

Karyotype analysis determines the number of chromosomes in the cells and whether there are any pieces of chromosomal material that are missing, extra, or rearranged. Any variation from the normal chromosome number and arrangement can have implications for a person's fertility and the risk for having a baby with birth defects. The following chromosomal conditions can be detected by karyotype analysis: 



Down syndrome (an extra 21 chromosome) 

Turner syndrome (females with only one X chromosome) 

Klinefelter syndrome (males with two X chromosomes and a Y chromosome) 

Other sex chromosome conditions, such as XXX or XYY 

Any other aneuploidy, which is an extra or missing single chromosome 

Triploidy, which is an extra set of chromosomes, so there are three of each and 69 total 

Mosaic chromosome conditions, in which a portion of the cells show an abnormal number or arrangement of chromosomes and a portion show a normal number and arrangement 

Translocations, which are rearrangements of the chromosome material 

Large missing or extra pieces of chromosome material that are visible under a microscope 



What a karyotype cannot tell us 

There are many genetic conditions that are the result of single gene mutations. Additionally, there are many genetic conditions that are caused by multiple genes interacting. These conditions cannot be detected by chromosome analysis. Examples of conditions that cannot be detected by karyotyping are: 



Very small deletions of the chromosomal material 

Very small duplications of the chromosomal material 

Some very subtle chromosome rearrangements 

Cystic fibrosis 

Tay-Sachs disease 

Sickle cell disease 

Dwarfism 

Breast cancer 

Cleft lip/palate 

Heart defects 

These are only a few examples. The complete list would contain thousands of genetic conditions that cannot be detected by chromosome analysis.</span>
You might be interested in
Discuss why prokaryotic cells probably appeared before eukaryotic cells​
dsp73

Answer:

Prokaryotes are smaller and less developed compared to eukaryotes. Some of them inhabit very primitive environments that resemble earth’s early stages. Endosymbiotic theory states that eukaryotes arose by the endosymbiosis of prokaryotes.

Explanation

By endosymbiont theory, eukaryotic cells arise from prokaryotic cells. Here, the theory shows that eukaryotic ancestors lived in close association with prokaryotes, wherein in some cases, prokaryotes have been engulfed and might have lived inside eukaryotes.

Upon being engulfed by a host cell as undigested prey, these prokaryotes could have been internal parasites of the eukaryotes. But, later on, their relationship becomes mutualistic and these prokaryotes become incorporated as organelles, such as in the case of chloroplasts and mitochondria, which were previously separate prokaryotes

______________________________________

6 0
2 years ago
What does Bioindicator mean?
jolli1 [7]
A bioindicator is a living organism that gives us an idea of the health of an ecosystem. Some organisms are very sensitive to pollution in their environment, so if pollutants are present, the organism may change its morphologyphysiology or behaviour, or it could even die. Hope that helped!
4 0
3 years ago
In a few generations, this population of beetles changed. A group of bugs includes 13 black bugs and 4 green bugs. After a few g
Andrei [34K]

Answer:

A. They moved to a greener habitat

Explanation:

7 0
3 years ago
Read 2 more answers
Decomposers are also called? *<br> A. Herbivores<br> B. Carnivores<br> C. Consumers<br> D. Producers
Temka [501]

Answer:

The answer is C.

Explanation:

Decomposers feed on dead organisms like plants and animals.

7 0
3 years ago
Xylem _____.
ladessa [460]
Xylem tissue that should help you out
7 0
3 years ago
Other questions:
  • How does nutrition as a characteristic of living organism differ in plants and animals?​
    8·1 answer
  • What is global warming? What can people do to reduce global warming?
    11·2 answers
  • Which correctly relates a function with a type of tissue?
    9·2 answers
  • What was the purpose of Mendel's experiments with dihybrid crosses?
    15·2 answers
  • Which is an example of an incomplete dominance
    7·1 answer
  • Which is a possible intended result of hybridization in plants?
    5·1 answer
  • Identify the structures of the female reproductive system using the drop-down menus. This structure is also called the birth can
    11·2 answers
  • Which of these is considered a cooling process?<br> evaporation<br> condensation<br> transpiration
    9·2 answers
  • A person living in a coma is considered living or dead?​
    5·2 answers
  • Why would Humans would not be able to repair and grow your muscles without bacteria
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!