Down syndrome is caused by the presence of an extra copy of chromosome 21. how would a karyotype identify a person with down syndrome ?

a) id physical characteristics of someone with the disease.

b) id chemical abnormalities in the blood

c) id parents as being carriers before they have children

d) id presence of an extra copy of chromosome 21

answer: i would say b.

explanation:

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml

all eukaryotic cell have mitochondria : )