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Serga [27]
3 years ago
10

Women have sex chromosomes XX, and men have sex chromosomes XY. Which of a woman's grandparents could not be the source of any o

f the genes on either of her X chromosomes?
A) mother's mother
B) father's mother
C) mother's father
D) father's father
Biology
1 answer:
Bond [772]3 years ago
8 0
The answer would be "Father's father" 'cause when boy born, he receives Y chromosome from his father and not X so he can't transfer it to his daughter, as he will transfer his X chromosome to her.

In short, Your Answer would be Option D

Hope this helps!
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This is for today help me pls!!
pashok25 [27]

Answer:

I do not see the picture

Explanation:

4 0
3 years ago
Although the cause of Parkinson's disease is unknown,research indicates that it may be due to defective nuclei in the cells of t
o-na [289]

Answer:

<u>Nervous System</u> could be studied as a direct result of having defective nuclei and may shed light on the  cause of Parkinson .

Explanation:

<u>PASRKINSON DISEASE -:</u> Parkinson's disease is a progressive nervous system condition. Several regions of the brain are affected by the condition, especially an area called substantia nigra that regulates balance and movement.

A trembling or shaking (tremor) of the limb is often the first sign of Parkinson's disease, particularly when the body is at rest. Typically, on one side of the body, the tremor starts, usually in one hand. The head, legs , feet, and face can also be affected by tremors. Other hallmark symptoms of Parkinson's disease are rigidity or rigidity of the limbs and body, slow movement (bradykinesia) or inability to move (akinesia), and impaired balance and coordination (postural instability).

Emotions and thinking ability (cognition) can also affect Parkinson's disease. Psychiatric disorders such as depression and visual hallucinations are created by some affected persons. There is also an increased risk of developing dementia in people with Parkinson's disease, which is a loss in intellectual functions, including judgment and memory.

Hence , the answer is <u>the nervous system and other regions of brain</u> where the disease has a direct result of having a defective nuclei and may shed light on the cause of Parkinson .                      

7 0
3 years ago
Unlike a eukaryotic cell, a prokaryotic cell lacks
Vikentia [17]

Answer:

D

Explanation:

I think D but I'm not sure but like

prokaryotic cells gave cytoplasm, cell wall and cell membrane they also have ribosomes

So I think D is the right answer but I'm not sure about membrame- bound organelles

8 0
2 years ago
Why is a DNA molecule called a double helix?
krok68 [10]

Answer:

A

Explanation:

Because there are two DNA strands in the DNA molecule and they both rotate around each other in a helix formation. So two helixes = double helix.

5 0
3 years ago
Read 2 more answers
What kind of effect can a chromosomal change can have on an organism?
SOVA2 [1]

Answer:

<u>positive, negative, or no effect</u>

Explanation:

The kind of effect that a chromosomal change can have on an organism is either positive, negative, or no effect.

The 3 main chromosomal disorders seen in humans are :

  1. <u>Down's Syndrome</u>
  2. <u>Klinefelter's Syndrome</u>
  3. <u>Turner's Syndrome</u>
6 0
2 years ago
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