megachromosome
heterosome
polytene chromosome
super numerary chromosome
C. polytene chromosome
1:1
3:1
1:2:1
9:3:3:3
crossing over
synapse
chiasmata
terminalization
megachromosome
heterosome
polytene chromosome
super numerary chromosome
lethal
sex-linked
inbred
dominance
Genetics
Evolution
Morphology
Cytology
deficiency of vitamic C
sex-linked abnormality
absence of rods in retina
absence of visual purple in retina
Curly hair
Sickle-cell anaemia
Colour-blindness
Down's syndrome
cause the death of the organism in which they are present
cause the death of the homozygous infant being formed
cause the death of heterozygous infant being formed
all of the above
none of her daughters are colour-blind
all her sons are colour-blind
all her daughters are colour-blind
half of her sons are colour-blind
the percentage of crossing over between themis high
hardly any cross-overs detected
no crossing-over can ever take place between them
only double cross overs can take place between them.
chromosomes are composed of DNA and protein
genes are composed of chromosomes
organism cannot live withoutchromosomes
genes are located on the chromosomes and are transmitted to the next generation through them.
Genome
Genepool
Genotype
Phenotype
Herting and Van Beneden
Sutton and Boveri
Hofmeister and Waldeyer
Farmer and Moore
TT
Tt
tt
None of these
Mast and Pantin
Watson and Crick
Corren, Tschermark and Hugo de Vries
Khorana and Nirenberg
leptotene
pachytene
diplotene
diakinesis
Watson
Crick
Temin
Porter
late prophase
early metaphase
metaphase
interphase
inbreeding
cross-breeding
back-crossing
self-fertilization
25
25.6
26
26.5
directly related to crossing over
same as translocation
inversely related to crossing over
opposite to segregation
heterosis
hybridization
hypostasis
dominance
a pair of homologous chromosomes
a pair of non-homologous chromosomes
a pair of sister chromosomes
a pair of non-sister chromosomes
prophase
metaphase
interphase
telophase
t-RNA
m-RNA
s-RNA
hn-RNA
homozygote
allelomorph
hybrid
ecotype
Diabetes
Phenylketonuria
Colour-blindness
Down's syndrome
X-rays
UV-rays
-rays
5-Bromo-Uracil
Hugo de Vries
T.H. Morgan
Sturtevant
H.J. Muller