Multiple Choice
An allele that is able to mask the expression of its partner allele is said to be __________.
29. Heredity
Patterns of Inheritance
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Many genetic disorders, such as albinism, cystic fibrosis, and Tay-Sachs disease, are inherited as simple recessive traits.
A
False
B
True
Verified step by step guidance1
Understand the concept of recessive traits: In genetics, a recessive trait is one that is expressed in an individual only if two copies of the recessive allele are present. This means that the individual must inherit one recessive allele from each parent.
Identify the inheritance pattern of the disorders mentioned: Albinism, cystic fibrosis, and Tay-Sachs disease are all examples of disorders that follow a recessive inheritance pattern. This means that they are expressed when an individual has two copies of the recessive allele.
Recognize the implications of recessive inheritance: For a recessive disorder to be expressed, both parents must either be carriers of the recessive allele or affected by the disorder themselves. Carriers have one dominant and one recessive allele but do not express the disorder.
Evaluate the statement given in the problem: The statement 'Many genetic disorders, such as albinism, cystic fibrosis, and Tay-Sachs disease, are inherited as simple recessive traits' is indeed true based on the understanding of recessive inheritance patterns.
Conclude with the correct answer: Given the explanation of recessive traits and the inheritance patterns of the mentioned disorders, the correct answer to the statement is 'True'.
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