BIOLOGY ACTIVITY

3. similarities among the parents and the progeny.
6. a sequence of nucleotides, which forms a molecule of DNA.
8. gave the concept of evolution as descent with modification.
11. the origin of species new from existing.
12. change in the frequencyof some genecaused by chance factor alone.
14. insects have well developed eyes with ______ vision.
15. he used the pea plant to study the mechanism of inheritance of characters.

1. they contain a set of 23 chromosomes bearing the entire set of genes.
2. a cross considering 2 pairs of contrasting characters.
4. the study of heredity and variation.
5. it constitutes small but significant changes in common charateristics of population a species.
7. a flatworm having rudimentary eyes consisting of a few photosensitive cells.
9. the hormone that causes tallness in pea plant.
10. differences among individual related by descent.
13. preserved remains or impressions of organisms that lived in the past.
16. the chemical basis of heredity.