A gene for flower fragrance has mutated D. A gene that is only active at night has mutated 相关知识点: 试题来源: 解析 A。解析:A选项,控制细胞伸长的基因发生突变很可能直接导致茎变短,这是合理的解释。B选项,与叶形相关的基因突变不太可能直接导致茎变短,两者没有直接关联。C选项,花香基因与茎的...
When a gene mutation occurs in a plant, which of the following is most likely to happen regarding its evolution? A. The plant will evolve into a completely different species immediately. B. The mutation may or may not be passed on to the next generation depending on its effect on the ...
21 When a gene mutation occurs, which of the following may be altered, resulting in the production of a non-functional protein? A1 amino acid sequence2 DN A nucleotide sequence3 mRN A nucleotide sequence A 1, 2 and 3 B 1 and 2 only C 2 and 3 only D 2 only 相关知识点: 试题来...
(1956). A gene mutation which changes a behavior pattern. Evolution 10 :421–439.Bastock, M., 1956 A gene mutation which changes a behavior pat- tern. Evolution 10: 421-439.Bastock MA (1956) A gene mutation which changes a behavior pattern. Evolution 10:421-439...
21 A mutation occurs in a gene which prevents the production of telomerase.What is the effect of this mutation if it occurs in bone marrow stem cells? A A a rapid increase in the production of lymphocytes B a tumour grows in the bone marrow C bone marrow stem cells eventually no longer...
Eukaryotes, it is an object to increase the protein produced in recombinant DNA method using mammalian cells. This object, the nucleotide sequence: x1cccx5x6x7 (In the formula, x1, represents a c, or t,, is x5, represents a t g, c, or a,, represents the g c, t, or a,, is ...
What are: a gene, a codon, an anticodon, the generic code? A mutation can cause disease if (a) it attracts mutagens. (b) the DNA sequence changes so that one amino acid is substituted for another in a way that affects the encoded protein's fu...
【单选题】A young woman of northern European descent is the single parent of a child with autosomal recessive cystic fibrosis. She marries her first cousin and becomes pregnant. What is the probability that her...
A BLAST search of publicly available NCBI sequences using the PBP2 L573Q variant found one E. coli genome (NZ_CP021879.1; strain AR_0137) encoding the identical PBP2 protein. E. coli strain AR_0137 is an antibiotic-resistant carbapenemase-producing strain that is part of the FDA-CDC resis...
Southern blot hybridization to previously mapped DNA sequences confirms that the missing segment of the X chromosome is a deletion and not an interstitial translocation and supports the cytogenetic interpretation that the deletion extends proximal of Xp11.3 and therefore probably comprises Xp22.11-p11.23...