List at least three types of information provided by a karyotype and interpret the chromosomal structural abnormality written as 46,XX,t(18q)
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A karyotype provides several kinds of information: (1) the number of chromosomes present, (2) the number and type of sex chromosomes, (3) the presence or absence of individual chromosomes, and (4) the nature and extent of detectable structural abnormalities. The chromosome abnormality presented can be interpreted as a female who carries a translocation in the long arm of chromosome 18 but otherwise is chromosomally normal.
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Answer the following statements true (T) or false (F)
1. All enzymes are proteins. 2. Because of the abundance of ribosomes, translation is NOT an energy costly process for the cell. 3. The cells of every organism make only a few different tRNA molecules encoded by the same gene. 4. In eukaryotes, 40S and 60S combine to form a 100S ribosome.
The figure above represents
a. individual genes from an asexual worm. b. maternal chromosomes that are identical. c. paternal chromosomes that are identical. d. homologous chromosomes. e. nonhomologous chromosomes.
Temperature
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All of the following are vesicles of the five vesicle stage, EXCEPT
A. Diencephalon B. Forebrain C. Mesencephalon D. Metencephalon E. Myelencephalon