In peas, tallness is dominant over dwarfness, and red colour of flowers is dominant over the white colour.

0 votes
33 views
asked Dec 8, 2017 in Biology by sforrest072 (157,439 points) 63 449 1291

In peas, tallness is dominant over dwarfness, and redcolour of flowers is dominant over the white colour.When a tall plant bearing red flowers was pollinated by a dwarf plant bearing white flowers, the different phenotypic groups were obtained in the progeny in numbers mentioned against them. 

Tall, Red = 138 

Tall, White = 132

Dwarf,Red = 136 

Dwarf, White = 128 

Mention the genotypes of the two parents and of the types of four offspring.

1 Answer

+1 vote
answered Dec 8, 2017 by mdsamim (213,225 points) 5 10 23
selected Feb 24, 2018 by sarthaks
 
Best answer

The result shows that the four types of offspring are in a ratio of 1:1:1:1. Such a result is observed in a test-cross progeny of a dihybrid cross. 

The cross can be represented as 

Tall & Red (Tt Rr) × Dwarf & white (ttrr)

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

One Thought Forever

“There is a close connection between getting up in the world and getting up in the morning.“
– Anon
~~~*****~~~

...