Chapter 4: Genetics The Science of Heredity

20. Thymine is replaced with___in the RNA.

12. The visible traits in an organism is called___

22. The two kinds of RNA are Transfer and___

10. When a person has both the dominant and recessive allele, the genotype is____

8.Probability is the ____that describes how likely it is that an event will occur

13. When both the alleles are expressed it is called___

1. The female reproductive part of the flower is called___

3. The short trait was lost in the___generation.

23. ___carries amino acids to ribosomes.

11. The allele combinations in an organism is called_____

7. Mendel's work proved that ____theory was incorrect.

18. Sex cells have ___the number of chromosomes as the other cells.

5.____are different forms of a gene.

6. A Recessive trait is only expressed when ____alleles are recessive.

4. Mendel used____traits to for his experiments.

19. We have ____genes

14. _____research proved that genes were placed on chromosomes.

24. There are____kinds of mutation.

15. Sutton proposed the ______ theory of Inheritance.

17. Meiosis forms____cells.

21. The ____of the nitrogen base of a gene forms the genetic code

25. Mutations can cause a cell to produce ______ to cause a different phenotype

9. Punnett square shows all the possible_____from a cross.

16. ___is the process when cells divide to produce two identical cells.

2. Mendel crossed a tall and a____ pea plant.