Examlex
To avoid serious genetic problems,when a cell is to divide,it must replicate
Sister Chromatids
Identical copies of a chromosome connected together by a centromere, produced during DNA replication.
Mitotic Spindle
A structure composed of microtubules that separates chromosomes into daughter cells during cell division.
Centromere
The region on a chromosome where two sister chromatids are joined and where the spindle fibers attach during cell division.
Animal Zygote
The initial cell formed when two gamete cells (egg and sperm) are joined by means of sexual reproduction, marking the beginning of a new organism's development.
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Q56: Mendel called a masking trait<br>A)dominant.<br>B)recessive.<br>C)homologous.<br>D)homozygous.<br>E)heterozygous.
Q60: DNA's sugar-phosphate backbones are joined with<br>A)ionic bonds.<br>B)hydrogen
Q65: "DNA and associated proteins in the nucleus"
Q70: A DNA sequence that signals the start