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Chromosomal Inheritance: Gene Mapping and Linkage

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Chromosomal Inheritance: Gene Mapping and Linkage

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Questions and Answers

What is the key concept in the chromosomal theory of inheritance?

Mendelian genes have specific loci on chromosomes (correct)

Genes are only expressed in a additive manner

Genes are only inherited in a dominant or recessive manner

Genes are inherited independently of each other

What is the term for the phenomenon where linked genes tend to be inherited together?

Gene linkage (correct)

Independent assortment

Crossing over

Recombination

What is the result of crossing over?

Segregation

Independent assortment

Recombination (correct)

Gene linkage

What is the recombination factor a measure of?

The physical distance between genes on a chromosome Signup and view all the answers

What is an example of recombinant offspring?

Cats with curly wings and eyes Signup and view all the answers

How is the recombination factor calculated?

By dividing the number of recombinant offspring by the total number of offspring Signup and view all the answers

What is the percentage of recombination between two genes if the RF is 217/1,500?

14.5% Signup and view all the answers

What is the result of nondisjunction during meiosis 1?

4 abnormal haploid cells Signup and view all the answers

What is the term for the condition where an individual has an extra copy of a particular chromosome?

Aneuploidy Signup and view all the answers

What is the result of X inactivation in females?

One X chromosome is randomly inactivated Signup and view all the answers

What is the term for the genetic map that shows the actual order of genes on a chromosome?

Linkage map Signup and view all the answers

What is the syndrome caused by an extra copy of the X chromosome in a male?

Klinefelter's Syndrome Signup and view all the answers