In Drosophila,the Genes B,c,and Sp Are Linked and in the Order

question 48

Multiple Choice

In Drosophila,the genes b,c,and sp are linked and in the order given,the distances being b-c = 30 m.u.and c-sp = 20 m.u.These intervals exhibit 90% interference.How many double crossovers would be recovered in a three-point cross involving b,c,and sp out of 1000 progeny?

• A) 3
• B) 6
• C) 54
• D) 60
• E) 600

---

Definitions:

International Bodies

Organizations formed by multiple nations to address global issues and facilitate international cooperation, such as the United Nations.

World Bank

A global financial organization that offers loans and grants to less wealthy nations' governments to support the execution of major capital ventures.

Bilateral Funding

Financial support provided by one country to another, or by a country to an international organization, aimed at supporting economic development or relief efforts.

World Bank

A worldwide economic entity that supplies loans and funding to the administrations of developing countries to facilitate the completion of significant infrastructure projects.