Animal Growth and Development |
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Page 8
... mitotic division which provides two daughter diploid nuclei and the egg is launched upon the first phase of embryogeny , known as cleavage . During cleavage successive mitotic divisions , at first synchronous in onset , provide a ...
... mitotic division which provides two daughter diploid nuclei and the egg is launched upon the first phase of embryogeny , known as cleavage . During cleavage successive mitotic divisions , at first synchronous in onset , provide a ...
Page 16
... mitotic division of the labelled cells the amount of 3H in each daughter nucleus will be halved . After several ... mitosis or sex - chromatin during interphase , and chromosomal rearrangements visible only during mitosis . In using such ...
... mitotic division of the labelled cells the amount of 3H in each daughter nucleus will be halved . After several ... mitosis or sex - chromatin during interphase , and chromosomal rearrangements visible only during mitosis . In using such ...
Page 42
... mitotic cycle , from metaphase to metaphase , lasts for well under 10 minutes . Later this rate diminishes , but our attention is directed not to the overall mitotic activity of the embryo but to differ- ences between mitotic activity ...
... mitotic cycle , from metaphase to metaphase , lasts for well under 10 minutes . Later this rate diminishes , but our attention is directed not to the overall mitotic activity of the embryo but to differ- ences between mitotic activity ...
Contents
Introduction | 1 |
Problems of Celllineage | 13 |
Nucleus and Cytoplasm | 22 |
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8-cell stage activity adult amphibian anatomical antibodies antigens appearance behaviour blastomeres blastopore blastula cell death cell division cell numbers cell populations cell-lineage chimaeras chromosomes cleavage stages crest cells cytoplasm descendants developmental differentiation diploid early cleavage ectoderm egg cytoplasm embryo embryogenesis EMBRYONIC INDUCTION endocrine endoderm example experimental experiments fertilized egg foetus frog future gastrulation gene germinal cytoplasm gill give rise gland gonads grafted cells grey crescent group of cells growth rate haemoglobin hormone important invaginate involve kind larvae later lens limb mammalian mammals maternal melanocytes membrane mesoderm mitotic morphogenetic movements mother neural crest neural folds neurulation newt normal development nuclear nuclei occur older embryo organism pigment placenta ploidy possible presumptive fate primordial germ cells produce protein regeneration region removal reptiles sea-urchin shell Sinistral somatic cells species specific growth sperm spermatozoa synthesis tadpole thyroid tion tissue tube urodele uterus ventral vertebrates vesicle vitro whole yolk