Developmental retardation due to paternal 5q/11q translocation in a Chinese infant: clinical, chromosomal and

Xiangyu Zhao1, Hongyan Xu, Chen Zhao

  • 1Department of Medical Genetics, Linyi People's Hospital, Linyi 276003, Shandong, People's Republic of China. lilinxy1996@163.com.

Journal of Genetics
|September 24, 2019
PubMed

Insights

Chromosomal translocation in parents can lead to birth defects. This study identified a paternal translocation between chromosomes 5 and 11 in a Chinese infant with multiple malformations, using chromosomal microarray analysis and fluorescence in situ hybridization.

Area of Science:

  • Human Genetics
  • Medical Genetics
  • Reproductive Genetics

Background:

  • Parental chromosomal translocations increase risks of miscarriage and embryonic death.
  • Normal gestation and delivery are still possible in carriers of chromosomal translocations.
  • Genetic factors underlying multiple malformations and developmental retardation require investigation.

Related Concept Videos

Karyotyping01:17

Karyotyping

Overview
68.1K
Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
36.8K
Sex-linked Disorders01:43

Sex-linked Disorders

Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
108.4K
Pedigree Analysis01:35

Pedigree Analysis

Overview
88.9K
Meiosis I01:49

Meiosis I

Meiosis is a carefully orchestrated set of cell divisions, the goal of which—in humans—is to produce haploid sperm or eggs, each containing half the number of chromosomes present in somatic cells elsewhere in the body. Meiosis I is the first such division, and involves several key steps, among them: condensation of replicated chromosomes in diploid cells; the pairing of homologous chromosomes and their exchange of information; and finally, the separation of homologous chromosomes by...
218.1K
Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
9.0K