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प्रश्न
Select the statements that describe characteristics of genes
- genes are specific sequence of bases in a DNA molecule
- a gene does not code for proteins
- in individuals of a given species, a specific gene is located on a particular chromosome
- each chromosome has only one gene
विकल्प
(i) and (ii)
(i) and (iii)
(i) and (iv)
(ii) and (iv)
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उत्तर
(i) and (iii)
Explanation -
A gene is a segment of DNA that codes for a protein. An organism has a number of genes present on the different chromosomes and each occupies a specific location of a particular chromosome. So, out of given four statements, statements (i) and (iii) are the characteristics of genes.
संबंधित प्रश्न
There are ................ pairs of chromosomes in the human being.
If a normal human cell has 46 chromosomes, how many chromosomes will be there in a human sperm cell?
A normal cell of human body contains 23 pairs of chromosomes. The number of chromosomes in a sex cell (sperm or ovum) of a human being is most likely to be :
(a) 46
(b) 23
(c) 21
(d) 42
The two versions of a trait (character) which are brought in by the male and female gametes are situated on :
(a) copies of the same chromosome
(b) sex chromosomes
(c) two different chromosomes
(d) any chromosomes
Define the following:
Sex-linked characters
With the help of a chart, explain the method of sex determination in honeybees.
In XO type of sex determination ______.
The number of pairs of sex chromosomes in the zygote of a human being is ______
In 1891, H. Henking studied spermatogenesis in squash bugs and observed that a specific nuclear structure was present in what percentage of the resulting sperms?
In a bird population using the ZW–ZZ sex determination system, if a ZZ male mates with a ZW female, what proportion of offspring would be expected to be female?
