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Assume That Investigators Crossed a Strain of Flies Carrying the Dominant

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Assume that investigators crossed a strain of flies carrying the dominant eye mutation Lobe on the second chromosome with a strain homozygous for the second chromosome recessive mutations smooth abdomen and straw body.The F1 Lobe females were then backcrossed with homozygous smooth abdomen,straw body males,the following phenotypes were observed: Assume that investigators crossed a strain of flies carrying the dominant eye mutation Lobe on the second chromosome with a strain homozygous for the second chromosome recessive mutations smooth abdomen and straw body.The F<sub>1 </sub>Lobe females were then backcrossed with homozygous smooth abdomen,straw body males,the following phenotypes were observed:   Give the map units between Lobe and straw. A) 15 B) 7.5 C) 10 D) 20 E) 5 Give the map units between Lobe and straw.


Definitions:

Evolutionary Changes

The alterations in the genetic makeup of populations over time, leading to the diversity of organisms found on Earth.

Species

An assembly of life forms made up of alike members that can interchange genes or mate with each other.

Microevolution

Evolutionary changes within a species or small group of organisms, particularly over a short period.

Genetic Changes

Alterations in the DNA sequence of an organism, which can affect its characteristics or behavior.

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