Biology, asked by bhedashraddhaa1256, 11 months ago

Down's syndrome is caused by an extra-copy of chromosome number 21What percentage of afected offspring is produced by an affected mother and a hornal father? (1)100% (2)75% (3)50% (4)25%

Answers

Answered by sowsriakansha12345

1

Answer:

2 is the correct option and answer....

Previous Question

Next Question

Similar questions

Math, 5 months ago

plz help!!!!!!!!!!!!!!!!!!

Hindi, 5 months ago

3.कबीर ने अद्वैत से क्या अर्थ ग्रहण किया। nanganawarana 2...

Math, 5 months ago

A bus travelled a distance of 420 km in 6 hours and a train covered a distance of 900 km in 3 hours. Calculate their speed and tell which one of the two travels faster- bus or train? if dont know ,please dont write nonsense...

Biology, 11 months ago

A woman with normal vision,but whose father was colour blind,marries a colour blind man,Suppose that the fourth child of this couple was a boyThis boy 1) May be colour blind or may be of normal vision 2) Must be colour blind 3) Must have normal colour vision (4)Will be partially colour blind since he is helerozygous for the colour blind mutant allele...

Biology, 11 months ago

Which of the following is not a method of direct gene transfer? (1)Chemical mediated gene transfer (2)Electroporation (3)Vectors (4)Microinjection...

English, 1 year ago

in which state literacy rate is higher...

English, 1 year ago

Essay about My aim in my life...

Sociology, 1 year ago

can anyone tell the main questions in class9 social...