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Genetics and Linkage Mapping

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Questions and Answers

What is the primary function of histone proteins in the chromosomal structure?

To catalyze the transcription of DNA into RNA

To provide a basic environment for the binding of DNA (correct)

To duplicate genetic material with high fidelity

To regulate the expression of genes through transcriptional control

What is the characteristic of genetic material that allows it to transmit information from one generation to the next?

Stable molecular structure with low frequency of mutation

Ability to catalyze the transcription of DNA into RNA

Ability to duplicate itself with high fidelity

Capacity to carry all necessary biological information (correct)

What is the term for the process by which genetic material duplicates itself with high fidelity?

Translation

Mutagenesis

Replication (correct)

Transcription

What is the primary function of non-histone chromosomal proteins?

To regulate the expression of genes through transcriptional control Signup and view all the answers

What is the term for the error rate at which genetic material duplicates itself?

One or less per million (1/1 M) copies Signup and view all the answers

What type of inheritance is characterized by the transmission of genes from father to son to grandson?

Y-linked inheritance Signup and view all the answers

What is the term for the phenomenon where the presence of a cross-over event in one region of a chromosome affects the frequency of cross-over events in another region?

Interference Signup and view all the answers

What is the term for the study of the genetic mapping of genes in haploid organisms?

Linkage mapping Signup and view all the answers

What is the term for the type of linkage that occurs on sex chromosomes?

Sex linkage Signup and view all the answers

What is the term for the genes that are always together in parentals and DCOs?

Linked genes Signup and view all the answers

What is the term for the process by which the sex of an organism is determined?

Genetic sex determination Signup and view all the answers

What is the result of a cross between two individuals with complete linkage?

100% parental types and 0% recombinant types Signup and view all the answers

What is the relationship between the number of chromosomes and the number of genes in an organism?

The number of chromosomes is not related to the number of genes Signup and view all the answers

What is the result of a cross between two individuals with incomplete linkage?

More than 50% parental types and less than 50% recombinant types Signup and view all the answers

What is a linkage group?

A physical association of genes on a chromosome Signup and view all the answers

Why are recombinants not obtained from crossing over between sister chromatids?

Because sister chromatids share the same gene Signup and view all the answers

What is the purpose of a test cross in genetics?

To determine the genotype of an individual with a dominant phenotype Signup and view all the answers