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Papessa [141]
3 years ago
5

Cells from an advanced malignant tumor most often have very abnormal chromosomes, and often an abnormal total number of chromoso

mes. Why might this occur?

Biology
1 answer:
Vera_Pavlovna [14]3 years ago
4 0

Answer:

This happened because the check points in cell cycles are not working properly which can help to stop cells having abnormal chromosomes.

See the attachment for proper understanding what actually happened in cell cycle check points.

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Classify each description according to the X-linked recessive disorder it describes.
Gekata [30.6K]

Answer:

Color Blindness Fragile X Syndrome: Disorder that is the most common cause of inherited mental impairment....

Duchenne Muscular Dystrophy: Disorder caused by the lack of dystrophin...

Hemophilia Disorder: caused by the absence or minimal presence of factor Vill or factor IX...

Colour blindness (Daltonism): Disorder that affects the ability to, in most cases distinguish reds from greens

Explanation:

Fragile X syndrome is an inherited disease associated with different health problems during development including cognitive disabilities.

Duchenne is an inherited disorder caused by a mutation in the dystrophin gene that encodes a protein required for normal muscle functioning.

Hemophilia is an inherited disorder caused by mutations in the genes that encode for coagulation factors, which are required for normal blood coagulation.

Colour blindness is an inherited condition associated with the ability to distinguish red color from green color. This condition is caused by mutations in the genes that encode for red and green light-sensitive proteins.

6 0
3 years ago
Changes in environmental conditions can drive evolution of populations by
Wewaii [24]
I think it’s all of the above.

Changing the environment would mean that traits are going to me favored, but that also means that niches also open up as a result.

I hope that helps.
6 0
4 years ago
Hypothesis: If the porosity of three soils are tested, then red clay soil will have the lowest porosity.
NNADVOKAT [17]

Answer:

This question is incomplete, based on the given hypothesis, the question is asking to identify the variables (independent and dependent) of the experiment.

*Independent variable: DIFFERENT SOILS

*Dependent variable: Porosity

Explanation:

- Independent variable is the variable that is manipulated or changed by an experimenter in order to effect a response in another variable. In this question, three different soils were used, hence, the SOIL is the independent variable.

- Dependent variable is the variable that responds to changes made to the independent variable. It is the variable being measured in an experiment. In this case, the porosity is the variable being measured, hence, it is the dependent variable.

4 0
3 years ago
HI there, could someone check that I have got the answers are right in the question I have done & answer the rest.
lord [1]
Firs one for food poisoning is surgery. A bacterial cell is compared to a virus because it could possibly kill you. Nose, hair ears and mouth.
7 0
4 years ago
Describe how fossils help us understand the past
stepan [7]
<span><em>They tell us how life evolved and adapted to different environments and global changes throughout the Earth's development</em>

<em>                                Hope this helps:)</em>





</span>
7 0
3 years ago
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