In Fruit Flies,bar Eye Is Inherited by an X-Linked Allele

question 51

Multiple Choice

In fruit flies,bar eye is inherited by an X-linked allele (B for bar) .If a heterozygous bar-eyed female is mated to a non-bar-eyed male,what will be the expected ratio of phenotype given four offspring?

• A)two bar-eyed females,two bar-eyed males
• B)one bar-eyed and one non-bar-eyed female,one bar-eyed and one non-bar-eyed male
• C)three bar-eyed females and one non-bar-eyed male
• D)bar-eyed females only
• E)non-bar-eyed males only

---

Definitions:

Careful Recording

The meticulous documentation of data, observations, or experimental findings to ensure accuracy and reliability.

Correlational Research

A type of non-experimental research method that examines the relationship between two or more variables to determine if a correlation exists.

Smoking Behaviour

The habits or patterns associated with tobacco use, including frequency, dependency, and the physical and psychological reasons behind it.

Naturalistic Observation

A research method in which subjects are observed in their natural environment without any manipulation by the researcher.