Haploid

Science / Genetics / Haploid: A single set of chromosomes (half the full set of genetic material), present in the egg and sperm cells of animals and in the egg and pollen cells of plants. Human beings have 23 chromosomes in their reproductive cells. Compare diploid.

Spores

Science / Biology / Spores: Impervious structures formed by some cells that encapsulate the cells and protect them from the environment; haploid cells that can survive unfavorable conditions and germinate into new haploid indivi MORE

Meiosis

Science / Biology / Meiosis: Cell division in which the chromosomes replicate, followed by two nuclear divisions. Each of the resulting gametes (in animals, spores in plants) receives a haploid set of chromosomes. Reduction/divis MORE

Diploid

Science / Biology / Diploid: Cells that contain homologous chromosomes. The number of chromosomes in the cells is the diploid number and is equal to 2n (n is the number of homologous pairs). MORE

Gamete

Science / Genetics / Gamete: An haploid cell.gel electrophoresis the process by which nucleic acids (dna or rna) or proteins are separated by size according to movement of the charged molecules in an electrical field. MORE

Zygote

Science / Marine Biology / Zygote: A fertilized egg. Or the diploid cell that results from the joining of two haploid gametes (sperm and egg) during sexual reproduction, that will cleave to form an embryo. See also fertilization, gamet MORE

Gametes

Science / Biology / Gametes: Haploid reproductive cells (ovum and sperm). MORE

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