What is the expected phenotypic ratio in the F1 of cross 6? A) 50% black females, 50% black males B) 50% black females, 50% gray males C) 50% black females, 50% tan males D) 50% brown females, 50% black males E) 50% tan females, 50% tan males

Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter12: Mendel, Genes, And Inheritance
Section: Chapter Questions
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4. Four pure lines of Guinea pigs (black, brown, gray, and tan) are used in a series of
crosses. The results are as follows:
Cross Mother Father F1
F2
55 black females, 57 black males, 19
brown females, 18 brown males
75 black females, 38 black males, 36 gray
1.
Black
Brown All black
2.
Black
Gray
All black
males
53 black females, 26 black males, 25 gray
males, 18 brown females, 9 brown males,
8 tan males
3.
Black
Tan
All black
4.
Brown Tan
All brown 72 brown females, 37 brown males, 34 tan
males
56 gray females, 57 gray males, 19 tan
females, 18 tan males
5.
Gray
Tan
All gray
6.
Tan
Black
??
What is the expected phenotypic ratio in the F1 of cross 6?
A) 50% black females, 50% black males
B) 50% black females, 50% gray males
C) 50% black females, 50% tan males
D) 50% brown females, 50% black males
E) 50% tan females, 50% tan males
Transcribed Image Text:4. Four pure lines of Guinea pigs (black, brown, gray, and tan) are used in a series of crosses. The results are as follows: Cross Mother Father F1 F2 55 black females, 57 black males, 19 brown females, 18 brown males 75 black females, 38 black males, 36 gray 1. Black Brown All black 2. Black Gray All black males 53 black females, 26 black males, 25 gray males, 18 brown females, 9 brown males, 8 tan males 3. Black Tan All black 4. Brown Tan All brown 72 brown females, 37 brown males, 34 tan males 56 gray females, 57 gray males, 19 tan females, 18 tan males 5. Gray Tan All gray 6. Tan Black ?? What is the expected phenotypic ratio in the F1 of cross 6? A) 50% black females, 50% black males B) 50% black females, 50% gray males C) 50% black females, 50% tan males D) 50% brown females, 50% black males E) 50% tan females, 50% tan males
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