Genetics

3. insertion and deletion are types of _______ mutations
5. meiosis phase in which homologous chromosomes are pulled to the opposite poles
8. type of base substitution that causes sickle cell anemia
9. small circular extra DNA molecules found only in prokaryotes
11. number of chromosomes after diploid cell with 40 chromosomes undergoes meiosis
13. diploid cell that is made after 2 gametes fuse
14. specie that contains between 20000 and 25000 genes
17. proteins found in eukaryotic cell that package the DNA into nucleosomes
18. shows the chromosomes of an organism in homologous pairs of decreasing length
19. fixed position on a chromosome where a particular gene is located
20. cells that are neither diploid or haploid
21. various types of genes

1. process in which gene segments of one homologous chromosome are exchanged with the same genes of the other one
2. process in which chromosomes or sister chromatids fail to separate during meiosis
4. heritable factor that influences a specific characteristic
6. karyotype test for nondisjunction disorder with lower risk
7. the entire base sequence of human genes was sequenced in the ________________
10. ___________ chromosomes are those with the same shape, size and carry the same genes on the same locus
12. cells with haploid number of chromosomes
15. process in which homologous chromosomes come together
16. syndrome that s caused by trisomy of chromosome 21