HEREDITY

1. The process of acquiring change is called __________.

2. _______ (Father of genetics) experiments stands for ________ .

3. TT or YY, Tt or Yy are responsible for a ________ character.

4. The study of fossils (evidence of ancient life forms) is called __________ .

5. Differences in characters with in closely related groups of organisms are called
___________ .

6. Mendel had chosen __________ of characteristics for his study in pea plants.

7. Externally visible characters are called ____________ .

8. The phenotypic ratio in monohybrid cross is _____ , and genotypic ratio is _______.

9. Alleles are same for character in _________ and different in ____________.

10. Phenotypic ratio in di hybrid cross is ___________.

11. Transmission of characters from parent to offspring is called _______and the process is called _________ .

12. Mendel factors are now known as ______ (segment of DNA).

13. Each human cell contains _______________________ pairs of chromosomes.

14. The allosomes (sex chromosomes) present in female are ____ and in males are ___.

15. Variations are formed during _________ reproduction or because of errors in DNA copying.

16. Change in frequency of genes in small population is known as ___________.

17. The law of inheritance of acquired characters was proposed by __________.

18. ______________ proved in rats that the body changes won’t be passed to its offspring.

19. Theory of natural selection was proposed by ___________ .

20. ______________ wrote the book “The principals of geology”.

21. Evolution of new species is called ______________ (macro evolution).

22. Evolution of homologous traits is called ________ and heterologous is ________ evolution.

23. Paleontologists determine the age of fossils by _______________.

24.______________ : 1. Homo habilus 2. Homo erectus 3. Homo sapiens neanderthalensis 3.Homo sapiens
(present man).

25. There are nearly ______ vestigial (not useful) organs in man (moving museum of vestigial organs).
Ex. Pinna, hair on skin, appendix