Two Alleles Hb And Hn Exist For The Pattern Baldness Gene The Hb Allele Is Dominant In Men But Recessive In Women T 1 (48.08 KiB) Viewed 43 times
Two Alleles Hb And Hn Exist For The Pattern Baldness Gene The Hb Allele Is Dominant In Men But Recessive In Women T 2 (37.22 KiB) Viewed 43 times
Two Alleles Hb And Hn Exist For The Pattern Baldness Gene The Hb Allele Is Dominant In Men But Recessive In Women T 3 (39.85 KiB) Viewed 43 times
Two alleles ( HB and HN) exist for the pattern baldness gene. The HB allele is dominant in men but recessive in women. The HN (normal) allele is dominant in females but recessive in males. A single HB allele seems to cause pattern baldness only in the presence of the level of testosterone normally found in adult males. Males will develop pattern baldness with the genotypes HBHN or HBHB; whereas, for females to develop pattern baldness, they must inherit two HB alleles. It appears that testosterone destroys or inhibits the production of an enzyme necessary for hair growth in the hair follicle. 2. The difference in expression of pattern baldness in women and men results from the pattern baldness gene's being influenced by the level of testosterone independent of hormonal balance
The difference in expression of pattern baldness in women and men results from the pattern baldness gene's being influenced by the level of testosterone independent of hormonal balance Y-linked X-linked 3. Parents who do not display pattern baldness have a son who exhibited pattern
3. Parents who do not display pattern baldness have a son who exhibited pattern baldness by the age of thirty. If they also have a daughter, she has no chance of going bald, as the HBHN genotype is not possible a 1 in 2 chance of going bald, as the HBHB genotype is possible a 1 in 3 chance of going bald, as the H8HN genotype is possible no chance of going bald, as the HBHB genotype is not possible
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