The family pedigree of Queen Victoria shows a number of haemophilic descendants as she was:
1. Affected by the disease
2. Carrier for the disease
3. Did not carry the allele for hemopihilia
4. Was not a queen

Study the given pedigree chart and choose the correct statement

1. The trait under study is dominant.

2. Both parents are homozygous.

3. The trait can be X-linked recessive disease haemophilia.

4. The trait depicted is autosomal recessive like cystic fibrosis.

The trait shown in the given pedigree chart is most likely a/an:

1. Autosomal recessive trait

2. Autosomal dominant trait

3. Sex linked recessive trait

4. Sex linked dominant trait

Study the pedigree chart of a family showing the inheritance of myotonic dystrophy.

The trait under study is 

1. dominant X-linked

2. recessive X-linked

3. autosomal dominant

4. recessive Y-linked.

In the given pedigree chart select the correct statement:

(1) A & B are twins

(2) A is younger than B

(3) B is younger than A

(4) Can’t determine the age of A & B