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3.3.2 Pedigrees and Sex-linked traits
www.houstonisd.orgSex-Linked Traits Remember that humans have 23 pairs of chromosomes and that the 23rd pair are the sex chromosomes. Females are XX and males are XY. The traits found on the 23rd X chromosome are called X-linked traits. If an X-linked trait is recessive, females have a 1 in 3 chance of inheriting that trait. Males have a 1 in
General Household Survey - Statistics South Africa
www.statssa.gov.za2.3 Population aged 20 years and older, by highest level of education, age group and sex, 2018 .....94 2.4 Population aged 15 years and older with a level of …
Mid-year population estimates - Statistics South …
www.statssa.gov.zaSTATISTICS SOUTH AFRICA P0302 Mid-year population estimates, 2017 2 Table 1: Mid-year population estimates for South Africa by population group and sex, 2017