Help with BIOLOGY ITS URGENT

Question

choose from the answers given :

Cystic fibrosis is a disease which is caused by a defective CFTR gene. This form of the gene is recessive. Let "N"=normal CFTR gene and "n" = abnormal CFTR gene. What is the genotype of individual 1 in generation I?

NN

Nn

nn

Either NN or Nn

Cystic fibrosis is a disease which is caused by a defective CFTR gene. This form of the gene is recessive. Let "N"=normal CFTR gene and "n" = abnormal CFTR gene. What is the genotype of individual 4 in generation II?

NN

Nn

nn

Either NN or Nn

Cystic fibrosis is a disease which is caused by a defective CFTR gene. This form of the gene is recessive. Let "N"=normal CFTR gene and "n" = abnormal CFTR gene. What is the most likely genotype of individual 1 in

generation II?

NN

Nn

nn

Either NN or Nn

Cystic fibrosis is a disease which is caused by a defective CFTR gene. This form of the gene is recessive. Let "N"=normal CFTR gene and "n" = abnormal CFTR gene. What is the genotype of individual 6 in generation II?

NN

Nn

nn

Either NN or Nn

Answer 1

as i have said in the other responses same trend is followed here

cystic fibrosis is autosomal recessive mendelian disorder so

1) individual one is Nn

2)individual 4 in gen 2 is also Nn

3)individual 1 in gen 2 is NN

4)individual 6 in gen 2 is Nn