Which genetic condition can be diagnosed by karyotyping? #1
Trisomy 21

#2
Sickle cell anaemia

#3
Colour blindness

#4
Haemophilia

Trisomy 21.

Explanation:

Trisomy 21 can be diagnosed by karyotyping, which is a process by which the chromosomes in a person's body can be photographed and checked for irregularities or abnormalities.

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the answer is 100% density i've answered this question before and done the quiz myself.

option d : from a warmer substance to a cooler substance

according to second law of thermodynamic, heat flows from higher to lower temperature region. heat is the transfer of energy from an object at higher temperature to an object at a lower temperature. so energy flows from warmer to colder objects.