议程
发表于 2025-3-23 10:15:42
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橡子
发表于 2025-3-23 15:26:42
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边缘
发表于 2025-3-23 18:20:06
Elucidation of So-called Sex-determining Factorsg factors on the other member of the sex chromosome pair. Yet, the exact nature of so-called sex-determining factors remains a riddle. While sex-linked genes are Mendelian genes which behave in a predictable manner, the sex-determining factors are elusive entities which have not permitted close scrutiny.
Lacerate
发表于 2025-3-24 01:45:45
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PLIC
发表于 2025-3-24 06:14:30
Book 1966a sperm-producing male or an egg-producing female appears to be decided rather haphazardly. In the worm, Banelia viridis, the minute males are parasites in the female. Larvae that become attached to the proboscis of an adult female become males, while unattached larvae sink to the bottom and become
peak-flow
发表于 2025-3-24 09:41:11
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馆长
发表于 2025-3-24 12:10:55
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chronicle
发表于 2025-3-24 15:17:36
Three Different Consequences of X-autosome Translocationnit clearly reveals that the type of X-autosome translocations which split the original X into two separate halves has always been severely deteriorative to speciation, and that these translocations were eliminated as they arose.
平息
发表于 2025-3-24 19:50:06
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威胁你
发表于 2025-3-25 00:11:35
Book 1966s is greatly enhanced by cross-fertilization. Indeed, the mechanism of sexual reproduction occurred very early in evolution, for it is seen today even in bacteria. In Escherichia coli, fertilization occurs by passage of the single chromosome from the male into the female bacterium (LEDERBERG, 1959).