[The establishment process of lac operon model and the analysis of several teaching problems].

Gene structure and expression regulation mechanism are the research hotspots and focus of modern life sciences. The lac operon is a cluster of genes through which Escherichia coli catabolizes lactose. It was first proposed by F.

Cultivating the scientific research ability of undergraduate students in teaching of genetics.

The classroom is the main venue for undergraduate teaching. It is worth pondering how to cultivate undergraduate's research ability in classroom teaching. Here we introduce the practices and experiences in teaching reform in genetics for training the research quality of undergraduate students from six aspects: (1) constructing the framework for curriculum framework systematicaly, (2) using the teaching content to reflect research progress, (3) explaining knowledge points with research activities, (4) explaining the scientific principles and experiments with PPT animation, (5) improving English reading ability through bilingual teaching, and (6) testing students' analysing ability through examination.

Understanding the cellular and molecular mechanisms of dominant and recessive inheritance in genetics course.

In Mendellian genetics, the dominance and recessiveness are used to describe the functional relationship between two alleles of one gene in a heterozygote. The allele which constitutes a phenotypical character over the other is named dominant and the one functionally masked is called recessive. The definitions thereby led to the creation of Mendel's laws on segregation and independent assortment and subsequent classic genetics.

Molecular cloning and characterization of Izumo1 gene from sheep and cashmere goat reveal alternative splicing.

We cloned the cDNA and genomic DNA encoding for Izumo1 of cashmere goat (Capra hircus) and sheep (Ovis aries). Analysis of 4.6 kb Izumo1 genomic sequences in sheep and goat revealed a canonical open reading frame (ORF) of 963 bp spliced by eight exons.