Flashcards in Chapter 4 Deck (39)
The nuclei of a normal human cells carry ________ pairs of chromosomes for a total of _______.
The kind of nuclear division that results in 2 daughter cells containing the same # of chromosomes as the original parent.
The kind of nuclear division that generates sperm or egg cells containing 1/2 the # of chromosomes found in other cells within the same organism.
Gametes and other cells that carry only a single set of chromosomes are called ______.
Zygotes and other cells that carry two matching sets of chromosomes. Maternal and paternal copies.
Individual chromosomes have duplicated. Each chromosome consisting of 2 identical halves at metaphase. Exact duplicates.
Can be metacentric or acrocentric.
Chromosomes that match in size, shape, and Banding pattern. They contain the same genes, though some genes may contain different alleles.
Homologous chromosomes or homologs
Chromosomes are carriers of genes
Chromosomal theory of inheritance
Chromosomes which carry completely different sets of genetic information
In diploid organisms one ________ of a ______ is of maternal origin and the other paternal.
Klienfelter syndrome is when a male is _______.
Turner syndrome is when a female is ____.
Sex determining region of Y, 110 protein coding genes.
The existence of XX males and XY females depending on where the part of SRY is attached (to X or Y).
Gender giving rise to two different types of gametes, two different sex chromosomes
One or 2 dark areas of chromatin that play a key role in the manufacture of ribosomes
Repeating pattern of cell growth (interphase, (when chromosomes have been duplicated)) followed by division (mitosis). (Letters)
Cell cycle, G2, M, G1, S
Interphase, gap before duplication, cell cycle
Interphase, DNA synthesis and chromosomal duplication, cell cycle
Interphase, gap before mitosis, cell cycle
Chromosomal duplication in the cell cycle
M phase, mitosis and cytokinesis
Exit for the cell cycle
Microtubules radiating out into the cytoplasm from a single organizing center
Small darkly staining bodies, core of each centrosome
Mitosis: Chromosomes condense and become viable, centrosomes move apart toward opposite poles and generate new microtubules, nucleoli begin to disappear (vocabulary: centromere, sister chromatids)
Mitosis: Nuclear envelope breaks down, microtubules from the centrosomes invade the nucleus, sister chromatids attach to the microtubules from opposite centrosomes (vocabulary: astral microtubules, kinetichore, kinetichore microtubules, polar microtubules)
Mitosis: Chromosomes align on the metaphase plate with sister chromatids facing opposite poles.
Mitosis: Centromeres (holding sister chromatids together) sever, the now separated sister chromatids move to opposite poles