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Mendel took garden pea plants with different characteristics, such as height to study the inheritance pattern of factors (genes). He crossed tall pea plant with short pea plant and obtained all the tall plants in the $\text{F}_1$ generation.
Answer the following questions :
(a) Why only tall pea plants were observed in $\text{F}_1$ progeny ?
(b) By which method did Mendel obtain $\text{F}_2$ progeny?
(c) (i) Write one difference between dominant and recessive trait.
OR
(c) (ii) Write two observations made by Mendel about $\text{F}_1$ progeny.
Answer the following questions :
(a) Why only tall pea plants were observed in $\text{F}_1$ progeny ?
(b) By which method did Mendel obtain $\text{F}_2$ progeny?
(c) (i) Write one difference between dominant and recessive trait.
OR
(c) (ii) Write two observations made by Mendel about $\text{F}_1$ progeny.
Show SolutionHide Solution↓
(a) In F1 progeny, pea plants have ‘Tt' where ‘T’ is dominant over ‘t’
so all the plants of F1 progeny were tall. / Tall height is dominant
1
trait over short height.
(b) Self-pollination
1
(c) (i)
Dominant trait
Recessive trait
i) Expresses itself over
i) Unable to express itself
recessive trait.
in presence of a
2
dominant trait.
ii) Expresses in both
ii) Expresses itself only
conditions-TT and Tt.
when it is 'tt' or in pure
condition.
(any one, any other suitable difference)
so all the plants of F1 progeny were tall. / Tall height is dominant
1
trait over short height.
(b) Self-pollination
1
(c) (i)
Dominant trait
Recessive trait
i) Expresses itself over
i) Unable to express itself
recessive trait.
in presence of a
2
dominant trait.
ii) Expresses in both
ii) Expresses itself only
conditions-TT and Tt.
when it is 'tt' or in pure
condition.
(any one, any other suitable difference)