Biology 3
Across
- 2. An organism’s genetic makeup for a particular trait
- 3. process in eukaryotic, sexually-reproducing animals that reduces the number of chromosomes in a cell before reproduction
- 9. The DNA in a cell
- 13. Offspring are EXACT GENETIC COPIES of parent
- 15. The division of the cytoplasm to the two genetically-identical cells.
- 16. The actual division of genetic material (DNA) to produce two genetically-identical cells.
- 18. The equal division producing 2 identical cells from a parent cell
- 20. The general appearance of complete sets of chromosomes
- 22. When neither allele is completely dominant and the F1 have a phenotype somewhere in between the parents
- 23. A mass of genetic material composed of DNA and proteins that condense to form chromosomes during eukaryotic cell division
- 24. A gene that can have multiple phenotypic effects
- 25. The life of a cell from the time it is first formed from a parent cell until its own division into 2 daughter cells
Down
- 1. The phenotypic expression of a gene at one locus alters that of a gene at a second locus
- 4. Offspring are UNIQUE due to different combinations of genes being inherited from 2 parents
- 5. An organized package of DNA found in the nucleus of the cell
- 6. The process of forming a double-stranded nucleic acid from two complementary strand s of DNA (or RNA)
- 7. An organism that has a pair of identical alleles for a particular trait (True Breed)
- 8. Breeding an organism of unknown genotype with a recessive homozygote
- 10. When 2 gametes meet, then restores the DIPLOID, or 2n number of chromosomes per cell
- 11. Cells that have a nucleus enclosed within the nuclear membrane and contain membrane-bound organelles
- 12. The 2 alleles each affect the phenotype in separate, distinguishable ways.
- 14. The reproduction of cells
- 17. An organism that has a pair of 2 different alleles for a particular trait (Not a True Breed)
- 19. An organism’s observable appearance particular trait
- 21. The reproductive cells (eggs & sperm) that transmit genes fromone generation to the next