PPT-Sex differences and the X chromosome

Sarah Medland Boulder 2019 Thinking about sex differences using the language of heterogeneity Are these differences due to differences in the magnitude of the effects quantitative eg Is the contribution of genetic effects greatersmaller in males than in females. Pietrzak. , R.H., Laird, J.D., Stevens, D.A., Thompson, N.S. (2002). Sex differences in human jealousy: a coordinated study of forced-choice, continuous rating-scale, and physiological responses on the same subjects. . CfE Advanced Higher Biology. Unit 2: Organisms and Evolution. 2biii. – Sex determination. Gender (2). Chromosomal sex determination (2). Sex linkage (5). Dosage compensation (2). Environmental sex determination (3). The bacterial chromosome is a double-stranded, circular DNA molecule associated with a small amount of protein. Eukaryotic chromosomes have linear DNA molecules associated with a large amount of protein. Advanced Higher Biology. Miss A Aitken. How do we become male or female?. Genes (most common). Sex can be determined by genetic factors. Environment (less common). Sex can be determined by things going on in the environment. "We agree with Eagly and recommend the use of computer simulations as a tool for assess- ing the impact of sex differences. Consider male-female differences in work performance ratings and how a com- Chromatin – the less tightly coiled DNA-protein complex. Centromere – the region of the chromosome that holds the two sister chromatids together during mitosis.. SEX CHROMOSOMES & AUTOSOMES. Sex chromosomes are chromosomes that determine the sex of an organism, and they may also carry genes for other characteristics. . Development of gonads. David Dora. . Semmelweis University, . Department of Anatomy. 2017. Developmental biology I.. Determination of sex. Formation and migration of PGCs . Formation of gonad primordia, colonisation by PGCs. The term . sex . refers to sexual phenotype.. . Most organisms . have only two sexual phenotypes: . male and female. . The fundamental difference between males and females is gamete size: . males produce small gametes. Sex Determination. Xy =. . XX= . female. male. Female . karyotype. Male . karyotype. X and Y chromosomes. Who decides. ?. Mom can give X . Dad can give X or Y. Structure and Function Dr. Farheen Waziri Assistant Professor DEPARTMENT OF ZOOLOG Y GAUTAM BUDDHA MAHILA COLLEGE GAYA Chromosome - Structure, Types and Functions Table of Contents Chromosome - Struct The recent cytological findings have also condemned the view that chromosomes have pellicle, matrix and chromonemata.A. Nucleolus organizer B. Chromosome C. NucleolusThe structure of chromosomes and g Unit 2: Organisms and Evolution. 2biii. – Sex determination. Gender (2). Chromosomal sex determination (2). Sex linkage (5). Dosage compensation (2). Environmental sex determination (3). Changing sex (2). Chromosome 2A. Chromosome 2B. Chromosome 3A. Chromosome 3B. Chromosome 4A. Chromosome 4B. Chromosome 5A. Chromosome 5B. Chromosome 6A. Chromosome 6B. Chromosome 7A. Chromosome 7B. Chromosome 8A. Chromosome 8B. Chromosome. Chromosome . means: . chroma. - colour; some - body) . E. . . Strasburger. in 1875 discovered thread-like structures which appeared during cell . division. Waldeyer. coined the term chromosome first time in 1888. .