Advertisements
Advertisements
प्रश्न
In a certain taxon of insects some have 17 chromosomes and the others have 18 chromosomes. The 17 and 18 chromosome-bearing organisms are ______.
विकल्प
males and females, respectively
females and males, respectively
all males
all females
Advertisements
उत्तर
In a certain taxon of insects some have 17 chromosomes and the others have 18 chromosomes. The 17 and 18 chromosome-bearing organisms are males and females, respectively.
APPEARS IN
संबंधित प्रश्न
If centromere is situated in the middle of the chromosome, it is called ________.
(a) Metacentric
(b) Acrocentric
(c) Submetacentric
(d) Telocentric
Sketch and label the structure of chromosome.
Who had proposed the chromosomal theory of inheritance?
Distinguish between X andY chromosomes. (Mention any 'two' points.)
Describe the structure of chromosomes with a suitable diagram.
Codon – anticodon interactions occur by
Write the salient features of the Sutton and Boveri concept.
Match the column I (Type of chromosome) with column II (name of chromosome).
| Type of chromosome | Name of chromosome | ||
| i. |  |
P. | Acrocentric |
| ii. |  |
Q. | Telocentric |
| iii. |  |
R. | Metacentric |
| iv. |  |
S. | Sub-metacentric |
Telocentric chromosome differs from acrocentric chromosome in that ____________.
During cell division, spindle fibres get attached to the disc shaped structures present on the centromere are known as ______.
At secondary constriction I, ______ becomes organized during interphase.
Which of the following does NOT agree with chrotnosomal theory of inheritance?
A plant having the genotype AABbCC will produce ______ kinds of gametes.
Extranuclear inheritance is a consequence of presence of genes in ______.
Mendel’s work was rediscovered by three scientists in the year ______.
Chromosome maps/genetic maps were first prepared by ______.
What would be the genotype of the parents if the offspring have the phenotypes in 1:1 proportion?
Discuss in detail the contributions of Morgan and Sturvant in the area of genetics.
Which of the following sentences are correct?
1. The offspring exhibit only parental combinations due to incomplete linkage
2. The linked genes exhibit some crossing over in complete linkage
3. The separation of two linked genes are possible in incomplete linkage
4. Crossing over is absent in complete linkage
A haemophilic man marries a carrier woman and they have a daughter. What is the probability of their daughter being haemophilic?
