Linkage (3.8)

Question 1

State the definition of the term locus

Answer 1

The physical site or location of a specific gene o a chromosome

Question 2

State the definition of the term linkage

Answer 2

When one genes locus is immediate;y next to another genes locus on another chromosome

Question 3

Use a genetic cross to show the F1 generation of a cross between a woman who is heterozygous for a X-linked disease and her unaffected partner

Answer 3

XN Xn

             Xn           XNXn         XNXn

    
             Y              XNY           XnY

Question 4

Explain why males are more likely to suffer from X-linked diseases than females

Answer 4

Due to only havong one x chromosome males are more likely to suffer from recessive x-linked diseases as well as they only have one x chromosome, instead of having two in which one could be a domiant allele not carrying the disease.