The phenotypic ratio when a tall plant with purple flowers (TtPp) is crossed with itself is:

9:3:3:1

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

9:4:3:1

No worries! We‘ve got your back. Try BYJU‘S free classes today!

8:5:3:1

No worries! We‘ve got your back. Try BYJU‘S free classes today!

9:2:2:2

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A 9:3:3:1
Using Punnet square method we get:
$\begin{matrix} G e m e t e s & T P & T p & t P & t p T P & T T P P & T T P p & T t P P & T t P p (t a l l a n d p u r p l e) & (t a l l a n d p u r p l e) & (t a l l a n d p u r p l e) & (t a l l a n d p u r p l e) T p & T T P p & T T p p & T t P p & T t p p (t a l l a n d p u r p l e) & (T a l l a n d w h i t e) & (t a l l a n d p u r p l e) & (T a l l a n d w h i t e) t P & T t P P & T t P p & t t P P & t t P p (t a l l a n d p u r p l e) & (t a l l a n d p u r p l e) & (d w a r f a n d p u r p l e) & (d w a r f a n d p u r p l e) t p & T t P p & T t p p & t t P p & t t p p (t a l l a n d p u r p l e) & (T a l l a n d w h i t e) & (d w a r f a n d p u r p l e) & (d w a r f a n d w h i t e) \end{matrix}$
Four types of phenotypes are obtained: Tall and Purple; Tall and white; Dwarf and purple and Dwarf and white. The phenotypic ratio obtained is 9:3:3:1.

Suggest Corrections

Similar questions

One plant with dominant tall height bearing purple flower crossed with another plant with recessive dwarf and white flower. 9:3:3:1 is the phenotype ratio in

F_{2}

generation.

Type 1 for true and 0 for false

Q. If tall pea plant bearing red flowers is crossed with a short pea plant bearing white flowers. What will be the phenotypic ratio of

F_{2}

generation?

What is the phenotypic ratio of progeny, when a hetrozygous plant with dominant red flowers is crossed with a homozygous plant with recessive white flowers?

Q. When the tall plants with purple flowers were crossed with dwarf plants having white flowers, Mendel found the ratio of progeny to be

Q. In a cross between a pea plant with purple flowers (PP) and a pea plant with white flowers (pp), the phenotypic ratio would be

Join BYJU'S Learning Program