Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
26 Cards in this Set
- Front
- Back
|
Phenotype |
Physical expression of a gene |
|
|
Genotype |
The pair of genes found for a single trait |
|
|
Mitosis |
Part of cell cycle in which chromosome in a cell nucleus are separated into two identical sets of chromosomes, and each set ends up in its own nucleus |
|
|
Meiosis |
Type of nuclear division that occurs as part of sexual reproduction in which the daughter dells receive the haploid number of chromosomes in varied combinations |
|
|
Meiosis |
Type of nuclear division that occurs as part of sexual reproduction in which the daughter dells receive the haploid number of chromosomes in varied combinations |
|
|
Chronic villi sampling |
Prenatal test in which a sample of chronic villi cells are removed for diagnostic purposes |
|
|
Meiosis |
Type of nuclear division that occurs as part of sexual reproduction in which the daughter dells receive the haploid number of chromosomes in varied combinations |
|
|
Chronic villi sampling |
Prenatal test in which a sample of chronic villi cells are removed for diagnostic purposes |
|
|
Crossing over |
Exchange of corresponding segments of genetic material between nonsister chromatids of homologous chromosomes during synopsis of meiosis |
|
|
Haploid |
Number of chromosomes; half the diploid number; the number characteristics of gametes that contain only one set of chromosomes |
|
|
Epistasis gene |
A gene that determines whether or not a trait will be expressed |
|
|
Lethal gene |
A gene that is capable of causing the death of an organism, usually during the development of the embryo |
|
|
Translocation |
Movement of a chromosomal segment from one chromosome to another non-homologous chromosome, leading to abnormalities |
|
|
Karyotyping |
Chromosomes arranged by pairs according to their size, shape, and general appearance in mitotic metaphase |
|
|
Amniocentesis |
Procedure for removing amniotic fluid surrounding the developing fetus for the testing of the fluid or cells within the fluid |
|
|
Polygenetic inheritance |
Inheritance pattern in which a trait is controlled by several alleles pairs; each dominant allele contributes to the phenotype in an additive and like manner |
|
|
Inversion |
Change in chromosome structure in which a segment of a chromosome is turned around 180 degrees; this reversed sequence of genes can lead to altered gene activity and abnormalities |
|
|
Diploid |
Number of chromosomes; twice the number of chromosomes found in gametes |
|
|
Allele |
Alternative form of a gene |
|
|
Duplication |
Change in chromosome structure in which a particular segment is present more than once in the same chromosome |
|
|
Tetrad |
A group or set of 4 |
|
|
Homozygous |
Having identical alleles for a given trait |
|
|
Heterozygous |
Having two different alleles for a given trait |
|
|
Incomplete dominance |
The alleles make an equal contribution to the phenotype of the offspring ( no dominant or recessive genes ) |
|
|
Complete dominance |
Two dominant alleles are expressed at the same time |
|
|
Deletion |
Change in chromosome structure in which the end of a chromosome breaks off or two simultaneous breaks lead to the loss of an internal segment l; often causes abnormalities |
