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Chapter 14 Bio
| Question | Answer |
|---|---|
| karotyping | is a picture that shows the complete diploid set of chromosomes. |
| purpose of karotype | identify the shape, size, and number of chromosomes in a single cell. |
| nondisjuction | failure of homologous chromosomes. Happens in Anaphase I/ Meiosis I |
| how many chromosomes are in a normal human karyotype | 46 |
| what is the difference between a sex chromosome and a autosome | an autosome isnt exactly what makes sex chromosome,sex chromosome determines the gender. |
| sex linked traits are located on the _________chromosomes | sex |
| female sex chromosome | xx |
| male sex chromosome | xy |
| show up more in _____ because ____________ | males, because they dont have a back up x chromosome |
| carrier | an organism possesing a recessive gene for a trait |
| example of carrier | mom has blue eyes, dad has brown eyes, if you get blue eyes that mean mom is dominant and dad is recessive |
| purpose of a pedigree | a family tree but it shows the path a genetic trait follows. |
| each generation is numbered by | roman numerals |
| siblings are numbered and ordered by | how they are born |
| sex chromosome | the x and y chromosome |
| sex linked gene | a gene on the x or y chromosome |
| gel electrophoresis | a technology used to separate fragments of dna |
| restriction enzyme | an enzyme that cuts a dna molecule into small pieces |
| autosome | and chromosome that is not a sex chromosome |
| genome | the full set of genetic information in an organism's dna |
| a circle represents a female in an | pedigree |
| the protein that cuts dna into pieces is a restriction | enzyme |
| an inherited disorder that appears more often in males than females is probably caused by a | sex- linked gene |
| the 23 pairs of human chromosomes are arranged from largest to smallest in a | karatype |
| humans have 22 pairs of | autosomes |
| the cause of down syndrome is ____ during meiosis | non disjunction |
| sickle cell disease | in which a defective polypeptide makes hemoglobin in the blood less soluble |
| cystic fibrosis | in which deletion of three bases in a gene causes cell membranes to lose their ability to transport chloride |
| Huntington's disease | in which a single codon for a certain amino acid repeats more than 40 times, causing mental deterioration and uncontrolled movements. |
| down syndrome | most often a result of three copies of chromosome 21 |
| turners syndrome | a female with a single x chromosome |
| klinefelter's syndrome | a male with an extra x chromosomes |
Created by:
sarahjames2000