King Henry VIII and his six wives. King Henry VIII of England married six times in an attempt to have a legitimate male heir to the English throne . Henry VIII blamed his wives for their inability to produce a son. Was Henry correct in blaming his wives? Explain. .
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King Henry VIII
and his six wives
King Henry VIII of England married six times in an attempt to have a legitimate male heir to the English throne. Henry VIII blamed his wives for their inability to produce a son.
Was Henry correct in blaming his wives? Explain.
Sex Determination in Humans:
Phenotype: 50% female , 50% male
Genotype:50% XX , 50% XY
Prince William and Kate Middleton
The firstborn of Prince
Williamand Kate Middleton
will be heir to the throne,
whether it’s a boy or a girl
under the new succession
X-linked Dominant: dominant allele carried on one or both of the X-chromosomes will cause expression of the phenotype
X-linked Recessive:recessive alleles must be present on bothX-chromosomes for a woman in order for the phenotype to be expressed, whereas a man only needs one recessive allele
Severe Combined Immunodeficiency
The gene that causes colour blindness is on the X chromosome.
Phenotype: 2 normal females
1 normal male
1 color blind male (XhY)
Genotype: 25% XHXH
25% XH Y
25% Xh Y