Which histone is present in a chromatosome? H1 H2A O H3
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- Which of the following is a common histone, but NOT part of the nucleosome core particle? O H1 OH4 O H2 O H3 O H5somatic cells males a normal amount of one too many sex chromosomes excess females infertility death the germ line autosomes one too few Humans who have aneuploidy of the sex chromosomes are viable. A human who has the Klinefelter syndrome (XXY) has the normal number of and will produce the normal amount of proteins from gene on autosomes. A person who has Klinefelter syndrome (XXY) has X chromosomes, one of which will condense into a Barr body in somatic cells. Most X chromosome genes produce protein. The few genes in the PAR region of the X chromosome remain active and those genes produce XXY somatic cells, leading to skeletal abnormalities in with Klinefelter syndrome. protein in the In the Barr body is reactivated. The higher dose of X chromosome gene expression in the XXY male germ line leads to defective spermatogenesis andHow many types of histone proteins are present in eukaryotic chromatin? 3 O7 4
- How many number of histone proteins present in a nucleosome? 4 6 9. 8E Samu E Samu FAIPQLSCDH_No2]MEaHUdrt5NWa2uY6AaKa7Bhy4xfhwplF-CsVAbyA/formResponse Gmail YouTube O Maps Which model below accurately depicts the process of mitosis? * 2n 2n 2n Option 1 Option 2 2n 2n 2n 2n Option 4 Option 3All of the following statements regarding nucleosomes are true EXCEPT A each bead-like structure contains 8 molecules of histones H1, H2A, H2B, H3 and H4 the bead like structures are made up of core histones wrapped around by the DNA strands the histone proteins in the nucleosomes contain positively charged amino acids that interact with the negatively charged DNA D the bead like structures are linked to each other by the DNA chain
- In eukaryotic chromosomes, DNA wraps around _________. a. histone proteins c. centromeres b. sister chromatids d. nucleosomesDiscuss the levels of chromosomal organization with reference to the following terms: a. nucleotide b. DNA double helix c. histones d. nucleosomes e. chromatinThe duplicated chromosomes are seen lined up in the center of the cell during prophase metaphase telophase anaphase s-phase
- Which of the following enzymes is a reverse transcriptase which allows the protruding 3' end of the telomere to grow longer? O telomerase Stn1 O hnRNP A1 O DNA pol VHELP PLEASE NO EXPLANATION NEEDED Which one is correct about somatic mutations? They can be inherited to progeny They can cause cancer They happen during fertilization They cannot be repairedAlpha helices and beta sheets are characteristic of protein primary structure secondary structure enzymatic structure tertiary structure quaternary structure? Which phase of cells division is shown exploring mitosis anaphase 2 anaphase 2 prophase i of meiosis prophase i of meiosis telophase i telophase i telophase 2? What is the main difference s between the categories of tertiary and quaternary structure do all proteins have tertiary structure what about quaternary structure explain?