| 11. | Dizygotic twins, like any other siblings, have an extremely small chance of having the same chromosome profile.
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| 12. | Like any other siblings, dizygotic twins may look similar, particularly given that they are the same age.
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| 13. | In a recent study using monozygotic and dizygotic twins, genetic evidence was given for a general factor of personality.
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| 14. | But if monozygotic twins separate early enough, the arrangement of sacs and placentas in utero is indistinguishable from dizygotic twins.
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| 15. | Thompson co-authored a widely cited twin study on communication disorders which found higher concordance in monozygotic twins than dizygotic twins.
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| 16. | From a biological point of view, the differences in these fraternal or dizygotic twins from two biracial parents are not surprising.
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| 17. | In contrast, the monozygotic twins share 100 % of their genes whereas the dizygotic twins only share about 50 % of their genes.
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| 18. | The monozygotic twins also chose spouses and best friends who were more similar to their co-twins'friends and spouses than did dizygotic twins.
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| 19. | The incidence may be substantially higher in small selected groups of dizygotic twin maternities, eg . those of women engaged in prostitution . ""
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| 20. | Dizygotic twins are no different than any other pair of full siblings-- they each inherit one copy of every autosomal gene from each parent.
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