| 31. | The egg colour is inherited by sex chromosome.
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| 32. | "We think today's X chromosome retains the gene content " of the non-sex chromosome, Page said.
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| 33. | Although it is an XY system, the platypus'sex chromosomes share no homologues with eutherian sex chromosomes.
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| 34. | There are other variations of sex chromosomes that lead to a variety of different physical expressions.
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| 35. | Although it is an XY system, the platypus'sex chromosomes share no homologues with eutherian sex chromosomes.
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| 36. | Another study to be published soon also indicates a problem with ICSI and the sex chromosomes.
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| 37. | Turner syndrome certainly is an example of how sex chromosome aneuploidies are milder than autosomal ones.
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| 38. | If so, the sex chromosomes of birds and of mammals should share a common chromosomal ancestry.
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| 39. | Sex in reptiles is decided not by having different sex chromosomes but, bizarrely enough, by environmental cues.
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| 40. | Guppies have 23 pairs of chromosomes, including one pair of sex chromosomes, the same number as humans.
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