Question

a simple explanation of monohybrid and dihybrid cross

Answer 1

monohybrid- cross pollination of two plants to study only one trait
dihybrid- cross pollination of two plants to study two characters or traits

Answer 2

Thus so

THE EXPLANATION GOES HERE ⤵

➡ MONOHYBRID CROSS WAS THE CROSS DONE BY GREGOR MENDEL IN ORDER TO SHOW THAT THE DOMINANT CHARACTER CAN EXPRESS ITSELF THAN THE RECESSIVE CHARACTER

➡ DOMINANT CHARCTER 75%
.
. RECESSIVE CHARACTER 25 %

WHERE HE HAS DONE CROSS FERTILIZATION OF ( TT . tt )


THUS HE GOT ALL TALL PLANTS ( T t ) .

HE DID SELF FERTILIZATION AND THEN GOT
( T T . T t . T t . t t )

SO
. HE HAS GOT THE

PENOTYPIC RATIO - 3 : 1

GENOTYPIC RATIO - 1 : 2 : 1

IT IS ALSO CALLED LAW OF DOMINANCE

THE DIHYBRID CROSS WAS DONE BY MENDEL TO SHOW THAT THERE EXISTS A INDEPENDENT CHARACTER WHICH CAN EXPRESS ITSELF

➡ HE HAS TAKEN TWO PEA PLANTS ( R Y ) AND ( r y )

THEN WHEN CROSSED HE GOT THAT ALL THE PLANTS WHERE ( R r Y y ) ROUND YELLOW

➡ HE HAS THEN DRAWN THE PUNNET SQUARE

. SO
HE GOT THE PENOTYPIC RATIO - 9 : 3 : 3 : 1

IT IS ALSO CALLED LAW OF INDEPENDENT ASSORTMENT

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