Question

PEDIGREE ANALYSIS

Examine the following pedigrees.

1. Examine the pedigree of achondroplasia (a form of dwarfism).

a) Is this trait dominant or recesive?_____

b) How do you know?_______

c) Label all genotypes on the pedigree chart:

2. Examine the pedigree of an X-linked recessive disorder (red-green color deficiency).

1) Label all of the genotypes on the pedigree chart:____

3. Examine the following pedigree.

a) Is it autosomal dominant or recessive, or X-linked recessive? _______

b) How do you know?______

c) Label all of the genotypes on the pedigree chart:____

Pedigree Analysis Examine the following pedigrees. 1 Examine the pedigree of achondroplasia (a form of dwarfism). a Is this trait dominant or recessive? b How do you know? CLabel all of the genotypes on the pedigree chart. Laboratory Exercise 9 Trait Genetics 115

Answer 1

1.

Autosomal dominant

The given pedigree is autosomal because it is present in both males and females with an equal chance.

It is dominant because it is present in all the generations. Affected parents have affected progenies.

Normal = aa

Affected = AA or Aa

та c Label all of the genotypes on the pedigree chart. ТАа Аа O o A_ A_ aa Ad Daa

According to guidelines, only first question can be answered. Please give a good rating.