Biology: Life on Earth |
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Page 306
... diploid individuals will yield only sterile offspring . Tetraploid mutants are thus reproductively isolated from their diploid ancestors and may constitute a new species . change in form Evolutionary history is often represented by an.
... diploid individuals will yield only sterile offspring . Tetraploid mutants are thus reproductively isolated from their diploid ancestors and may constitute a new species . change in form Evolutionary history is often represented by an.
Page 407
... Diploid Generations The plant life cycle is characterized by alternation of generations ( Fig . 21-2 ) , in which separate diploid and haploid generations alternate with one another . ( Re- call that a diploid organism has two sets of ...
... Diploid Generations The plant life cycle is characterized by alternation of generations ( Fig . 21-2 ) , in which separate diploid and haploid generations alternate with one another . ( Re- call that a diploid organism has two sets of ...
Page 496
... diploid organisms occur at different parts of the life cycle . n refers to the haploid state , 2n to the diploid state . When you see ferns , look on the undersides of their leaves ; occasionally you will find clusters of brown sporan ...
... diploid organisms occur at different parts of the life cycle . n refers to the haploid state , 2n to the diploid state . When you see ferns , look on the undersides of their leaves ; occasionally you will find clusters of brown sporan ...
Contents
Why Preserve Biodiversity? | 14 |
CASE STUDY REVISITED Life on Earthand Elsewhere? | 16 |
UNIT ONE THE LIFE OF A CELL | 19 |
Copyright | |
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allele amino acids animals antibodies atoms auxin bacteria blood cells body bonds bone brain called capillaries carbon cause cell division cell walls cellular cellular respiration Chapter chemical chromosomes color concentration contains cycle cytoplasm diffusion digestive diploid disease electron embryo endergonic reactions energy environment enzymes eukaryotic eukaryotic cells evolution evolutionary evolved example female fertilization FIGURE flowers fluid fossils function fungi gametes gametophyte gene genetic glands glucose haploid hormones human hydrogen immune infected intestine ions kidneys layer light-dependent reactions lungs male mammals Media Activity meiosis metabolism molecules mRNA muscle mutations natural selection nervous system neurons nucleotides nucleus nutrients occurs offspring organisms oxygen photosynthesis plants plasma membrane pollen population produce prokaryotic proteins protists reactions receptors release reproduction ribosomes root seed sexual species sperm spores stem stimulates strand structures sugar synthesize tion tissue transport tube types vascular vertebrates viruses X chromosome xylem