The graph below represents the mortality rate of offspring from marriages registered in 1903 1907 in Italian populations The

Question

The graph below represents the mortality rate of offspring from marriages registered in 1903 1907 in Italian populations The data indicate that the offspring of related individuals have higher mortality rates What is the likely cause for this inbreeding depression 30 Offspring mortality prior to age 21 25 20 20 2 22 7 27 8 28 9 First Not Second 1 2 related cousins cousins cousins Degree of relatedness of parents O a Inbred individuals are more likely than other individuals to be homozygous for deleterious recessive alleles O b Italian populations are more likely than other populations to have genetic diseases O c Italians are more likely to mate with other Italians than with individuals of other nationalities Od The offspring of close relatives are born at a larger size than other offspring Oe Close relatives are more likely to neglect their children

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