Achondroplasia is the most common form of dwarfism in miniature horses. Achondroplasia dwarf horses have normal sized bodies and heads, but noticeably smaller upper legs and ears. This form of dwarfism is an autosomal dominant trait. The pedigree shows the offspring of one horse without dwarfism, Individual 1, and one with dwarfism, Individual 2. The horses with achondroplasia are shorter.

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Achondroplasia is the most common form of dwarfism in
miniature horses. Achondroplasia dwarf horses have normal
sized bodies and heads, but noticeably smaller upper legs and
ears. This form of dwarfism is an autosomal dominant trait.
The pedigree shows the offspring of one horse without
dwarfism, Individual 1, and one with dwarfism, Individual 2. The
horses with achondroplasia are shorter.
1
2
3
4
5
Transcribed Image Text:Achondroplasia is the most common form of dwarfism in miniature horses. Achondroplasia dwarf horses have normal sized bodies and heads, but noticeably smaller upper legs and ears. This form of dwarfism is an autosomal dominant trait. The pedigree shows the offspring of one horse without dwarfism, Individual 1, and one with dwarfism, Individual 2. The horses with achondroplasia are shorter. 1 2 3 4 5
Based on the pedigree, which of the following is an accurate
claim about the genotype of Individual 2?
The horse is homozygous dominant because
A
it demonstrates the dwarfism trait.
The horse is homozygous recessive because
it was able to produce an offspring that is
also homozygous recessive.
В
The horse is heterozygous because it was
able to produce a non-dwarf offspring.
The horse is heterozygous because it is able
to produce offspring with the dwarfism
phenotype.
D
Transcribed Image Text:Based on the pedigree, which of the following is an accurate claim about the genotype of Individual 2? The horse is homozygous dominant because A it demonstrates the dwarfism trait. The horse is homozygous recessive because it was able to produce an offspring that is also homozygous recessive. В The horse is heterozygous because it was able to produce a non-dwarf offspring. The horse is heterozygous because it is able to produce offspring with the dwarfism phenotype. D
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