Which of the following statements is INCORRECT regarding the assembly of DNA into higher-order chromatin structure?

I. Histone H1 is not part of the histone octamer, but binds to linker DNA and is responsible for higher-order chromatin structure.

II. The 30 nm fibers of a chromosome are attached to a/an RNA-protein scaffold that holds the fibers in large loops.

III. It is not possible for linear DNA to be supercoiled. Only circular DNA, which has no ends, can have regions of supercoiling.

IV. Core histones lacking their amino-terminal tails are capable of forming 30-nm fibers as they help to stabilize the 30-nm fiber in internucleosomal interactions.

#Question id: 4804

#Unit 8. Inheritance Biology

Formation of the following pattern in an ordered octad is due to what event during meiosis? Pattern: AAaaaaaAA

#Question id: 4805

#Unit 8. Inheritance Biology

What is maximum parental frequency for two genes if single cross over within two strands?

#Question id: 4806

#Unit 8. Inheritance Biology

Four incompletely link gene as cis configuration, Heterozygote ABCD/abcd produced a gamete with genotype AbCD is due to

#Question id: 4807

#Unit 8. Inheritance Biology

Three incompletely link marker gene was found. There is a marker A gene present in middle. Cross between aaBBcc X AAbbCC to produce heterozygous were allowed test cross, which of the following test cross offspring should be least frequent?

#Question id: 4808

#Unit 8. Inheritance Biology

When F1 female Drosophila of the genotype AaBbCc is test crossed, ( Gene A and B located at 10 map unit in transe configuration but gene C are independently assort for both gene. Which of the following test cross progeny that is that is more frequent?

#Question id: 4809

#Unit 8. Inheritance Biology

The upper most following figure above shows the locations of four genes on the genetic map of an organism; the lower figure shows the locations of the same four genes on a physical map derived from the nucleotide sequence of the DNA of that organism. The maps are not identical because