Noun1.X chromosome- the sex chromosome that is present in both sexes: singly in males and doubly in females; "human females normally have two X chromosomes" sex chromosome- (genetics) a chromosome that determines the sex of an individual; "mammals normally have two sex chromosomes" ...
The human genome is packaged into a set of chromosomes as in other eukaryotes. Chromosomes are thus the vehicles of inheritance as they contain virtually the entire cellular DNA, with the exception of the small fraction present in the mitochondria. The structure, function, and behavior of chromoso...
Koller PC, Darlington CD (1934) The genetical and mechanical properties of the sex chromosomes: 1. Rattus norvegicus. J Genet 29:159–173 Google Scholar Koopman P, Gubbay J, Collignon J, Lovell-Badge R (1989) Zfy gene expression patterns are not compatible with a primary role in mouse ...
Atkins, L. , and K. H. Gustavson : The pattern of DNA synthesis in human chromosomes in cells with an XXY sex chromosome constitution. Hereditas (Lund) 51 , 135–145 (1964).Atkins, L., Gustavson, K. H.: The pattern of DNA synthesis in human chromosomes in cells with an XXY sex ...
The present study focuses on the impact that sex chromosomes might have on these differences. Utilizing the inherent differences in sex and X-chromosome dosage among XXY males, XY males, and XX females, comparative voxel-based morphometry was conducted using sex hormones and sex chromosomes as ...
(Fig.1). Due to the diversity in the genetic sequences of the X and Y chromosomes, they do not undergo pairing during meiosis, except for the regions in PAR which pair and recombine with the PARs in the X chromosome during meiosis. However, the recombination and pairing of PARs is ...
[2]. Recombination during male meiosis was suppressed, over time, resulting in vast levels of divergence between the human sex chromosomes, with the exception of the pseudoautosomal regions (PAR1 and PAR2) located at the termini of the X and Y chromosomes [3]. Over 800 protein coding and ...
The chromosomes were studied in a human intersex ("true hermaphrodite") characterized by ambiguous external genitalia and abdominal gonads consisting of a left ovotestis and a right primitive testis. The tissues sampled for chromosome studies (two skin biopsies, right gonad and blood) contained cells...
As expected, the most pronounced differences in gene expression between male and female placentas have consistently been localized to the sex chromosomes, however widespread differences in autosomal gene expression have been detected as well, and account for some of the most dynamic developmental sex ...
Autosomal sex differences in early placenta As expected, the most pronounced differences in gene expression between male and female placentas have consistently been localized to the sex chromosomes, however widespread differences in autosomal gene expression have been detected as well, and account for...