Tag: chromosomal basis of inheritance
Questions Related to chromosomal basis of inheritance
Suppose that out of $1000$ offspring in the $F _2$ generation of a dihybrid cross, $748$ are tall and hairy, $6$ are tall and smooth, $4$ are short and hairy, $242$ are short and smooth. The reason is that the genes controlling these characters are.
Association of parental combination of characters in offspring in excess of dihybrid cross is due to.
Read (i) to (v) and find the correct option
(i) Nitrogen base is linked to pentose sugar through N-glycosidic linkage
(ii) Phosphate group is linked to 5 - OH of a nucleoside through phosphoester linkage
(iii) Two nucleosides are linked through 3' -5' N-glycosidic linkage
(iv) Negatively charged DNA is wrapped around positively charged histone octamer to form nucleosome
(v) Chromatin that is more densely packed and stains dark is called euchromatin
Number of linkage in a polynucleotide would be __________________.
Which of the following is suitable for experiment on linkage ?
Linkage decreases frequency of.
Determination of percentage of crossing over between two linked genes is important in
In a dihybrid cross between two heterozygotes, AaBb $\times$ AaBb, if we get a 3 : 1 ratio among offspring, the reason would be ___________.
An exception to Mendel's principle/ Mendel did not include in his discoveries
The phenomenon of closely placed genes being inherited together is