Question

A cross between pure tall , green sreds and pure dwarf yellow seeds is crossed with pure dwarf and green seeds then no of phenotype produce are....
A. 2 B. 6 C.4 D. 1

Answer 1

$\huge\bigstar\underline\green{Answer}$

★ First of all cross pure tall green seeds with pure dwarf yellow seeds

TTyy ×. ttYY

→ TtYy

now, cross TtYy with (pure dwarf and green seed) ttyy

★ TtYy. ×. ttyy

Trick to find number of phenotype

★ Tt × tt.

→ Tt. Tt. tt. tt

• ★ Yy × yy

→ Yy Yy. yy. yy

types of phenotype =

TtYy, Ttyy, ttYy, ttyy

hence, number of phenotype obtained = 4

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Answer 2

Explanation:

First of all cross pure tall green seeds with pure dwarf yellow seeds

TTyy ×. ttYY

→ TtYy

now, cross TtYy with (pure dwarf and green seed) ttyy

★ TtYy. ×. ttyy

Trick to find number of phenotype

★ Tt × tt.

→ Tt. Tt. tt. tt

• ★ Yy × yy

→ Yy Yy. yy. yy

types of phenotype =

TtYy, Ttyy, ttYy, ttyy

hence, number of phenotype obtained = 4