Key: O 2.5.1 2.5.2 2.5.3 2.5.4 3 Male without Tay-Sachs Female without Tay-Sachs 5 Individuals genotypes. 2 6 Male with Tay-Sachs Female with Tay-Sa Describe what is meant by an autosomal disorder. How many sons do individuals 1 and 2 have? Using individuals 3, 4 and 7, explain why it can be conclude Tay-Sachs disease is controlled by a recessive allele. 1 and 2 can produce children with three p

Human Anatomy & Physiology (11th Edition)
11th Edition
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Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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5
The diagram below shows the inheritance of Tay-Sachs, a rare disease which
leads to the destruction of neurons. It is inherited as an autosomal disorder,
controlled by two alleles, (T) and (t).
Key:
2.5.1
2.5.2
2.5.3
2.5.4
3
7
4
reserved
11
SC/NSC
Male without Tay-Sachs
Female without Tay-Sachs
5
2
6
Male with Tay-Sachs
Female with Tay-Sachs
Describe what is meant by an autosomal disorder.
How many sons do individuals 1 and 2 have?
Using individuals 3, 4 and 7, explain why it can be concluded that
Tay-Sachs disease is controlled by a recessive allele.
Individuals 1 and 2 can produce children with three possible
genotypes.
List ALL the genotypes that have a 25% chance of being produced.
In humans, haemophilia is caused by a recessive allele on the
X-chromosome (X").
A woman, who is heterozygous for haemophilia, marries a man with
haemophilia.
Use a genetic cross to show the percentage chance of the couple having a
daughter who is homozygous for normal blood clotting.
Please turn o
Transcribed Image Text:5 The diagram below shows the inheritance of Tay-Sachs, a rare disease which leads to the destruction of neurons. It is inherited as an autosomal disorder, controlled by two alleles, (T) and (t). Key: 2.5.1 2.5.2 2.5.3 2.5.4 3 7 4 reserved 11 SC/NSC Male without Tay-Sachs Female without Tay-Sachs 5 2 6 Male with Tay-Sachs Female with Tay-Sachs Describe what is meant by an autosomal disorder. How many sons do individuals 1 and 2 have? Using individuals 3, 4 and 7, explain why it can be concluded that Tay-Sachs disease is controlled by a recessive allele. Individuals 1 and 2 can produce children with three possible genotypes. List ALL the genotypes that have a 25% chance of being produced. In humans, haemophilia is caused by a recessive allele on the X-chromosome (X"). A woman, who is heterozygous for haemophilia, marries a man with haemophilia. Use a genetic cross to show the percentage chance of the couple having a daughter who is homozygous for normal blood clotting. Please turn o
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