Term
| Chromosomes and genes are both presented in pairs of what? |
|
Definition
|
|
Term
Homologouse chomosomes separate and alleles segragrate during? |
|
Definition
|
|
Term
Fertilization restores the paired condition for both? |
|
Definition
|
|
Term
| How long do fruit flys live? |
|
Definition
| 2 weeks due to there prolific breeders |
|
|
Term
|
Definition
| the nomal charater phenotype is |
|
|
Term
|
Definition
| single male fly with white eyes instead of the usual red. |
|
|
Term
|
Definition
genes located on the same chromosome. They tend to be inherited together as a unit. |
|
|
Term
| Morgan crossed F1 heterozygous females with? |
|
Definition
| homzygous recessive males |
|
|
Term
| The wild-type body color is gray and |
|
Definition
|
|
Term
| The wild-type wing size is normal and the |
|
Definition
| mutant has vestigial wings |
|
|
Term
|
Definition
| the production of off spring with new combinations of tratis inherited from two parents |
|
|
Term
|
Definition
| Phenotypes that match the original P parents either with yellow round seed or green-wrinkled seeds. |
|
|
Term
| The physical bases of recombination betweem unlinked genes is? |
|
Definition
Randome orientation of homogous chomosomes at mataphase 1 |
|
|
Term
| In contrast, linked genes located on the same choromosome, tend to move together thorugh |
|
Definition
| Meiosis and fertilazation |
|
|
Term
| Under normal mendelian genetic rules |
|
Definition
| We would not expect linked genes to recombine into assortments of allels not found in the parents. |
|
|
Term
|
Definition
| recominants Divided by total offspring |
|
|
Term
|
Definition
| Crossing over the linked genes to develp a methos for contructing this. |
|
|
Term
|
Definition
Hypothesized that frequency of recombinant offspring reflected the distances between genes on a chromosome. |
|
|
Term
| The greater the distance beween two genes. |
|
Definition
| The more points between them where cossing over can occur. |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
| anatomical signs of sex appear when the embryo is about |
|
Definition
|
|
Term
|
Definition
| Generic embryonic gonads develp into ovaries |
|
|
Term
| Duchenne muscular dystrophy |
|
Definition
Affects 1/3,500 males born in the US. -Rarly to they live past there 20s. -dues to the absence of an X-linked gene for a key suscle protien, called dystophin |
|
|
Term
|
Definition
Sex-linked recessive trait defined by the ansence of one or more clotting. -bleeding in muscles and joints can be painful and lead to serious damage. |
|
|
Term
|
Definition
During female development, one X chromosome per cell condenses into a compact object. - this inactivates most of its genes. |
|
|
Term
| Heterzygous woman will have patches of |
|
Definition
| Normal skin and skin patches lacking sweat glands. |
|
|
Term
|
Definition
| Occurs when problems with the meiotic spindle cause errors in daughter cells |
|
|
Term
|
Definition
| Offspring results from fertilization of normal gamete with one after nondisjuntion will have abnormal chomosome number |
|
|
Term
|
Definition
| cells have three copies of particular chomoosme type and have 2n+1 chomosomes. |
|
|
Term
|
Definition
| Cells have only one copy of a particular chomosome type and have 2n-1 chromosomes |
|
|
Term
|
Definition
| Organisms with more that two complete sets of chomosomes have undergone. |
|
|
Term
|
Definition
| Occues when a chomosome fragment lacking a centromere is lost during cell division |
|
|
Term
|
Definition
| occurs when a fragment becomes attached as an extra segment to a sister chromatid |
|
|
Term
|
Definition
| occurs when a chomosomal fragment reattaches to the original chromosome but in the reverse orientation |
|
|
Term
|
Definition
| chromosomal fragment joins a nonhomologous chomosome. |
|
|
Term
|
Definition
dues to three copies of chomosome 21 -affects 1 in 700 children bron in US |
|
|
Term
| This may be linked to some age-dependent abnormality in the spinle of checkpoint meiosis, leading to |
|
Definition
|
|
Term
| Nondisjuntion ofo sex chromosome produces |
|
Definition
| a variety of aneuploid conditions in humans |
|
|
Term
| Klinefelts syndrome XXY male, occurs on in |
|
Definition
|
|
Term
| Males with Y chomosome tend to be |
|
Definition
| some what taler than average |
|
|
Term
|
Definition
| 1909 first observed cytoplamic genes in plants |
|
|
Term
| Not all of a eukaryote cell gens are |
|
Definition
located in the nucleus -found in small circles of DNA in mitochondria dn chloroplast -THey reproduce themselves |
|
|
