381.
When a certain character is inherited only through female parent, it probably represents
A
multiple plastid inheritance
B
cytoplasmic inheritance
C
incomplete dominance
D
mendelian nuclear inheritance
Answer :
cytoplasmic inheritance
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382.
Branch of biology dealing with heredity and variationis called
A
Palaentolozy
B
Evolution
C
Genetics
D
Ecolozy
Answer :
Genetics
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383.
Kappa-particles shows
A
Cytoplasmic inheritance
B
Nuclear inheritance
C
Nucleo-cytoplasmic inheritance
D
Mutation
Answer :
Cytoplasmic inheritance
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384.
The number of chromosomes present in the cells of the bread wheat (Triticum aestivum) suggests that it is
A
Hexaploid
B
Diploid
C
Tetraploid
D
Pentaploid
Answer :
Hexaploid
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385.
Polygenic genes show
A
Identical phenotype
B
Identical biochemistry
C
Different phenotype
D
Identical genotype
Answer :
Different phenotype
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386.
The Mesozoic era is also called as
A
The golden age of the amphibian
B
The golden age of the reptiles
C
The golden age of the mammals
D
The golden age of the birds
Answer :
The golden age of the reptiles
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387.
Parents are carrier for albinism. What will be thefirst three children
A
Some normal, heterozygous and albino
B
AH normal
C
All heterozygous albino
D
No normal
Answer :
Some normal, heterozygous and albino
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388.
When two different genotypes produce the same phenotype due to environmental difference, then each one is known as
A
Phenotype
B
Phenocopy ,
C
Progeny
D
Independent offspring
Answer :
Phenocopy ,
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389.
In Down's syndrome, Karyotyping has shown that the disorder is associated with trisomy of chromosome number-21 usually due to
A
non-disjunction during egg-cell formation
B
non-disjunction during sperm-cell formation
C
non-disjunction during formation of egg- cells and sperm-cells
D
addition of extra chromosome during mitosis of the zygote
Answer :
non-disjunction during formation of egg- cells and sperm-cells
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390.
In mendel's experiments, colour of seed coat, natureof flower, position of flower, colour of pod, heightof stem, are called
A
Alleles
B
Genotype
C
Phenotype
D
All of the above
Answer :
Phenotype
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