PRINCIPLE OF INHERITANCE AND VARIATION

WHO IS THE FATHER OF GENETICS?

• ALFRED STURTEVANT

• GREGOR JOHAN MENDEL

• TSCHERMAK

• T H MORGAN

IN THE TEST CROSS

• UNKNOWN HYBRID IS CROSSED WITH HOMOZYGOUS DOMINANT PARENT

• UNKNOWN HYBRID IS CROSSED WITH HETEROZYGOUS PARENT

• UNKNOWN HYBRID IS CROSSED WITH HOMOZYGOUS RECESSIVE PARENT

• NONE OF THE ABOVE

T H MORGAN EXPERIMENTALLY VERIFIED CHROMOSOMAL THEORY OF INHERITANCE BY USING Drosophila melanogaster BECAUSE

• IT COMPLETES ITS LIFE CYCLE IN ABOUT TWO WEEKS

• IT PRODUCES LARGE NUMBER OF PROGENIES IN SINGLE MATING

• MALE IS DISTINCT FROM FEMALE

• ALL OF THE ABOVE

IN Mirabilis jalapa WHEN THE PLANT WITH RED FLOWER CROSSED WITH THAT OF WHITE FLOWER F1 HYBRIDS SHOW FLOWERS WITH PINK COLOUR ,THIS IS DUE TO

• MENDELIAN DOMINANCE

• CODOMINANCE

• INCOMPLETE DOMINANCE

• ALL OF THE ABOVE

THERE ARE 6 GENOTYPES TO REPRESENT 4 BLOOD GROUPS IN HUMAN BEINGS.WHICH ONE OF THE FOLLOWING GENOTYPES SHOWS CODOMINANCE

• I^AI^A

• I^BI^B

• I^AI

• I^AI^B

IN THIS IMAGE WHICH CROSS SHOWS HIGH DEGREE OF RECOMBINATION

• FIRST CROSS

• SECOND CROSS

• BOTH

• NONE OF THESE

WHEN A MAN WITH BLOOD A GETS MARRIED TO A WOMAN WITH BLOOD GROUP B ,THEN THEIR FIRST CHILD HAS BLOOD GROUP O.FIND OUT PROBABILITY OF OTHER BLOOD GROUPS THEIR CHILDREN.

• A,B,AB

• B,O

• A,O

• A,AB

ONE TRAIT CAN BE INFLUENCED BY MORE THAN ONE GENES,THIS IS THE CASE OF

• PLEIOTROPY

• POLYGENIC INHERITANCE

• CODOMINANCE

• ALL OF THE ABOVE

IF THE THE NUMBER OF CHROMOSOME IN QUEEN BEE IS 32 THEN WHAT WILL BE THE NUMBER OF CHROMOSOME IN WORKER BEE AND DRONE RESPECTIVELY?

• 32,32

• 32,64

• 32,16

• 16,32

IF A PEA PLANT WITH GENOTYPE RRYy IS CROSSED WITH ANOTHER PEA PLANT WITH GENOTYPE RrYy THEN FIND OUT THE PHENOTYPIC RATIO OF F1 HYBRIDS.

• 6:3

• 6:2

• 1:2:1

• 9:3:3:1