問題詳情
52. A researcher found a method she could use to manipulate and quantify phosphorylation and methylation in embryoniccells in culture. One of her colleagues suggested she try increased methylation of C nucleotides in a mammalian system.Which of the following results would she most likely see?
(A) increased chromatin condensation
(B) decreased chromatin concentration
(C) abnormalities of mouse embryos
(D) decreased binding of transcription factors
(E) inactivation of the selected genes
(A) increased chromatin condensation
(B) decreased chromatin concentration
(C) abnormalities of mouse embryos
(D) decreased binding of transcription factors
(E) inactivation of the selected genes
參考答案
答案：E
難度：困難0.333333
統計：A(2),B(0),C(2),D(2),E(4)
內容推薦
- 操俥位置在駕駛台（W/H）且主機在備便中，若主機停俥超過預設時間，當再次動俥時將會慢速運轉（Slow turning），其主要目的是：(A)為了主機的安全(B)測試主機的好壞(C)停俥太久不知主
- Which one is the correct description of community ecology?(A) Testing both biotic and abiotic fa
- If cells in the process of dividing are subjected to colchicine, a drug that interferes with the
- Ⅱ.【單選題】51-75 題，每題 2 分，共計 50 分。答錯 1 題倒扣 0.5 分，倒扣至本大題零分為止，未作答，不給分亦不扣分。In many ways, the regulation
- In DNA cloning experiments, which vectors can be keeping the largest DNA fragments?(A) Plasmid (
- In which vertebrates is fertilization exclusively internal?(A) chondrichthyans, osteichthyans, a
- 在主機遙控系統中，有關於正俥（Ahead）及倒俥（Astern）邏輯偵測的元件是：(A)凸輪軸（Cam shaft）的位置(B)換向閥（Reversing valve）的位置(C)俥鐘桿的位置(
- Which is NOT a microtubule-organizing center (MTOC)?(A) centrosome (B) basal body of cilia (C) mi
- In the lactose operon of E. coli, which one is the description of the product of the lacI gene?(
- A flowering plant with a deleterious mutation in microsporogenesis would most likely _____.(A) f
內容推薦
- In muscular-skeletal systems, which one is the correct description?(A) Arthropod exoskeletons ar
- The term homoplasy is most applicable to which of the following features?(A) the legless conditi
- In human endocrine systems, which one is NOT correct description?(A) Metamorphosis in flatfishes
- An mRNA sequence is 5’-AUG-GGC-ACU-CAU-ACU-UAA-3’, where AUG is the start codon and UAA is the st
- When observing the skeleton of a snake, you see the remains of hip and hind leg bones associated
- In fungi, which one is the correct description?(A) Wildlife benefit from endophytes because the
- Telomerase is an enzyme can solve the problem of replication at the ends of linear chromosomes.
- In flowering plant, which one of the following is true characteristic of the gametophyte stage?(
- Self-splicing of group II introns is similar to nuclear pre-mRNA splicing because(A) both need sn
- The group of protists to which humans are most closely related is:(A) Rhizaria. (B) the choanofl
- In Taiwan, farmers harvest banana when the fruit is green. Then, it is shipped to other countrie
- Taxol is an anticancer drug extracted from the bark of the Pacific yew tree. It disrupts microtu
- In eukaryotes there are several different types of RNA polymerase. Which type is involved in tra
- Assuming a fat molecule can be oxidized into 2 glycerol molecules, which are then converted togly
- Which of the following is NOT a defining trait of the phylum Chordata?(A) notochord (B) dorsal h
- In octopus, what kind of respiratory pigment can be found?(A) Hemocyanin (B) Hemoglobin (C) Hemo
- Which of the following statements about plant hormones differing from hormones in animals is cor
- Which is the most common route through which a protein is secreted from a eukaryotic cell?(A) pla
- Which of the following proteins is NOT a component of focal adhesions?(A) cadherins (B) integrins
- The physiologist J. Soum surgically sealed off an air sac of a pigeon and injected carbon monoxi
- Why does the S-type strain of Streptococcus pneumonia cause pneumonia?(A) Unable to defend the i
- Movement of integral membrane proteins between the apical and basolateral domains of an epithelia
- During splicing, which molecular component of the spliceosome catalyzes the excision reaction?(A
- Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming
- In monohybrid crosses, the phenotype ratio 1:2:1 indicates _____.(A) linkage disequilibrium (B)