True breeding tall red flowered plants are crossed with dwar

True breeding tall red flowered plants are crossed with dwarf white- flowered plants. The resulting F1 generation consists of all tall pink flowered plants. Assuming that height and flower color are each determined by a single gene locus, predict the results of an F1 cross of the T Rr plants. List the phenotypes and predicted ratios for the F2 generation. Blood typing has been used to exonerate men in paternity cases. Which blood groups was the father NOT in order for him to be exonerated?

Solution

Answer:

(1)

Tall red = TTRR

Dwarf white = ttrr

F1 = TtRr

F2

TR

Tr

tR

tr

TR

TTRR (tall, red)

TTRr (tall, pink)

TtRR (tall, red)

TtRr (tall, pink)

Tr

TTRr (tall, pink)

TTrr (tall, white)

TtRr (tall, pink)

Ttrr (tall, white)

tR

TtRR (tall, red)

TtRr (tall, pink)

ttRR (dwarf, red)

ttRr   (dwarf, pink)

tr

TtRr (tall, pink)

Ttrr (tall, white)

ttRr (dwarf, pink)

ttrr (dwarf, white)

6 Tall pink: 3 Tall Red: 3 Tall white: 1 dwarf red: 2 dwarf pink: 1 dwarf white

	TR	Tr	tR	tr
TR	TTRR (tall, red)	TTRr (tall, pink)	TtRR (tall, red)	TtRr (tall, pink)
Tr	TTRr (tall, pink)	TTrr (tall, white)	TtRr (tall, pink)	Ttrr (tall, white)
tR	TtRR (tall, red)	TtRr (tall, pink)	ttRR (dwarf, red)	ttRr   (dwarf, pink)
tr	TtRr (tall, pink)	Ttrr (tall, white)	ttRr (dwarf, pink)	ttrr (dwarf, white)