SLS Bio Genetics MT Word Scramble
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Term | Definition |
Allele | An alternative form of a gene. |
Autosome | Any chromosome that is not a sex chromosome |
codominance | A condition in which neither of two alleles of a gene is dominant or recessive. |
dihybrid | A cross between individuals that have different alleles for the same gene |
dominant allele | An allele whose trait always shows up in the organism when the allele is present. |
genotype | An organism's genetic makeup, or allele combinations. |
heterozygous | An organism that has two different alleles for a trait |
homozygous | An organism that has two identical alleles for a trait |
monohybrid | A cross between individuals that involves one pair of contrasting traits |
multiple allele | A gene that has more than two alleles |
phenotype | An organism's physical appearance, or visible traits. |
punnet square | A chart that shows all the possible combinations of alleles that can result from a genetic cross |
recessive allele | An allele that is masked when a dominant allele is present |
sex chromosome | Chromosomes that determine the sex of an individual |
sex-linked trait | a trait that is determined by a gene found on one of the sex chromosomes, such as the X chromosome or the Y chromosome in humans |
test cross | the crossing of an individual of unknown genotype with a homozygous recessive individual to determine the unknown genotype |
apoptosis | Programmed cell death |
cell cycle | series of events that cells go through as they grow and divide |
centriole | Cell organelle that aids in cell division in animal cells only |
centromere | Area where the chromatids of a chromosome are attached |
chromatin | Clusters of DNA, RNA, and proteins in the nucleus of a cell |
chromosome | A threadlike, gene-carrying structure found in the nucleus. Each chromosome consists of one very long DNA molecule and associated proteins. |
crossing-over | process in which homologous chromosomes exchange portions of their chromatids during meiosis |
cytokinesis | Division of the cytoplasm during cell division |
diploid (2n) | Are the cells in the end of Meiosis I Haploid (n) or Diploid (2n) |
chromosome number | the number of chromosomes in a normal cell, in humans there are 23 pairs of chromosomes |
gamete | Sex cell |
haploid (n) | half the normal number of chromosomes; found in sex cells |
homologous chromosomes | Chromosomes that have the same sequence of genes and the same structure |
meiosis | Cell division that produces reproductive cells in sexually reproducing organisms |
mitosis | A process of nuclear division in eukaryotic cells conventionally divided into five stages: prophase, prometaphase, metaphase, anaphase, and telophase. |
nondisjunction | Error in meiosis in which homologous chromosomes fail to separate. |
somatic cell | Any of the cells of a plant or animal except the reproductive cells. |
synapsis | Pairing of homologous chromosomes |
Created by:
Marcus Tezinde
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