The Genes Encoding Gonadal and Nongonadal Forms of 3[beta]-Hydroxysteroid Dehydrogenase/[Delta]5-[Delta]4 Isomerase Are Closely Linked on Mouse Chromosome 3 The biosynthesis of steroid hormones in the gonads and adrenal glands requires the activities of the enzyme 3β-hydroxysteroid dehydrogenase/isom...
详细解释: 以下为句子列表: 英文: Supergene A collection of closely linked genes that determine a particular trait or series of inter-related traits and behave as a single unit because crossing over between them is very rare. 中文: 超基因:一组紧密联系在一起的基因集合,它们共同决定一个生物特性或...
16. However, the single master sex-determining genes reported in most animals, including mammals and many teleosts, probably originated after, not with, the transition to gonochorism; this involved replacing an earlier sex-determining gene in a so-called ‘turnover event’17,18. Recombination...
Paul E. Polani.Pairing of X and Y chromosomes, non-inactivation of X-linked genes, and the maleness factor[J]. Human Genetics .1982(3)Polani P (1982) Pairing of X and Y chromosomes, non-inactivation of X-linked genes, and the maleness factor. Hum Genet 60:207–211...
Suppose that a plant has two genes that are linked, with Ab on one homolog of a homologous pair of chromosomes and aB on the other homolog. What gametes could the plant produce if there was no crossing-over between these genes during meiosis? A. Ab and aB only B. AB and ab only C...
What action breaks up linked genes to increase genetic variation? recombination and crossing over The mitochondrial DNA sequence of a woman should match all of the following people except: a.) her mother b.) her father c.) her sons
(TransGen Biotech). The expression levels of two genes,DTWD2andLOC431648, on the Z chromosome were analyzed by quantitative polymerase chain reaction (q-PCR) on an ABI 7500 system (Applied Biosystems, Foster City, CA), with Power SYBR Green PCR Master Mix (Applied Biosystems). All reactions...
3) linked genes 连锁基因 1. These concepts include crossing-over value, recombination frequency, genetic map distance, sytenic genes, linked genes, sex-linked inheritance, sex-limited inheritance, sex-control inheritan. 这些概念包括交换值、重组率和遗传图距,同(共)线基因与连锁基因,伴性遗传、限...
If the genes are loosely linked, these tetrad genotypes can also arise as a consequence of a three-strand double cross-over between X and Y (or Y and Z ) and a third cross-over between Y and Z (or X and Y ), but the strand-relationships with the third cross-over are two- or ...
(a) m+ msw (b) Inbreeding of 4 (a) (c) Inbreeding of 4 (b) 198 — 203 285 ——308 988 147 1080 1 The linkage data on sex-linked genes in Aedes aegypti are summarised by Bhalla and Craig (1970). The sw gene is the most closely sex-linked marker yet found in Aedes aegypti,...