The answer is c. alleles that are carried on X and Y chromosomes.
Sex-linked traits are those traits which inheritance depends on sex chromosomes. Sex chromosomes are X and Y. Women have two X chromosomes, while men have one X and one Y chromosome. One those chromosomes are genes responsible for some sex-linked traits. As genes on the other chromosomes, genes on sex chromosomes as well have different forms called alleles. Therefore, alleles that are carried on X and Y chromosomes (sex chromosomes) best describe sex-linked traits.
On Earth's surface, less direct and less intense solar radiation are received by the<em> poles.</em>
Answer: Option 2
Explanation:
Various parts of Earth's surface get different measures of sunlight. The part which is closer to the sun receives more radiation than the part which is far away.
The Sun's beams strike Earth's surface most <em>directly</em> at the<em> Equator </em>as it is near to the sun when compared to the<em> poles</em> in which it strikes the surface at an <em>inclination</em>.
I would consult your parents if you think you might have adhd but me being a person that has adhd I would say if you are very jittery and get side tracked very easily then those are some signs however if you comment why you think you might have adhd I can help you out :)