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CBSE Class 12 - Biology solved questions with answers

71 Organisms phenotypically similar but genotypically different are said to be
A heterozygous
B monozygous
C multizygous
D homozygous

Answer: Option [A]
72 A crtoss used to ascertain whether a dominant is homozygous or heterozygous is termed
A monohybrid
B reciprocal
C back cross
D linkage cross

Answer: Option [C]
73 An individual receiving like genes for the same characters from its two parents, is known as
A allelomorphic
B homozygous
C heterozygous
D azygous

Answer: Option [B]
74 When dominant and recessive alleles express themselves together, it is called
A dominance
B co-dominanace
C amphidominance
D pseudodominance

Answer: Option [B]
75 An organism which receives identical alleles of a particular gene from both parents is
A Heterozygote
B Holometabolous
C Homosapiens
D Homozygote

Answer: Option [D]


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