BIOL 303 Chapter Notes - Chapter 6: Haemophilia B, Hermaphrodite, Miscarriage
1 Mar 2017
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In a y chromosome, both tips are regions termed pseudoautosomal because they can cross over with counterparts on an x chromosome. Primary sex ratio: the sex ratio at conception. Secondary sex ratio: sex ratio at birth. Tertiary sex ratio: the sex ratio at maturity. The sex with the two same sex chromosomes is called the homogametic sex. Statements that affected people with congenital adrenal hyperplasia: At birth, girls have swollen clitorises that appear to be small penises. Boys enter puberty as early as 3 years old. A change that is passed from one cell generation to the next but that does not alter the dna base sequence is known as a(n) epigenetic change. In the context of the effect of x inactivation on the phenotype, a carrier of an x- linked trait who expresses the phenotype is called a manifesting heterozygote. Levels of sexuality and their respective events: Xy = male, xx = female, fertilization.
