PPT Slide

m -1/2a

m+1/2a

m -1/2a

m+1/2a

Ave.

Outbred population - half sib design

Sire mated at random

Q

q

M

m

X

?

?

?

?

Sire

Q

?

M

?

q

?

m

?

Q

?

m

?

q

?

M

?

Half-sib

Progeny

1/2(1-r)

1/2(1-r)

1/2 r

1/2 r

m +1/2 (1-2r)a

Contrast mM?-mm?

= (1-2r)a

m - 1/2 (1-2r)a

r

Non-recombinants

Recombinants

Choose sires that are heterozygous for markers. Choose polymorphic markers (minimizes interference from dams in tracing sire alleles to progeny )

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