Download Chapter 3: Reproduction

Chapter 3: Reproduction
Review
Name_________________
heredityasexual reproductiongenesexual reproductionegg cellsperm cellmeiosisfertilizationselective breeding1. Do heredity and environment both affect an organism’s characteristics? Explain.
2. List the forms of asexual reproduction.
3. Why are chromosomes important?
4. During fertilization the egg cell and sperm cell unite to form a ______________. It receives
half of its chromosomes from its mother and half from its father. What is the result of this for the
offspring?
5. How does a flowering plant attract pollinators?
6. Look at the following diagram of the flower. Match the number with the correct statement.
______ This is where pollination occurs.
______ The female part of the flower.
______ Where pollen grains are found.
______ This is where fertilization takes place.
7. Many animals that live in or near water reproduce by external fertilization. What are some
differences between external and internal fertilization.
8. Using a T-chart compare asexual & sexual reproduction.
9. If both asexual & sexual organisms lived in the same pond and suddenly the temperature of the
pond were to increase dramatically, which one would be most likely to survive and why?
10. What information is contained the base pairs of DNA?
11. What is the result when an error occurs and a strand of DNA does not make an exact copy of
itself during mitosis?
What about meiosis?
12. What is a dominant trait?
13. What is a recessive trait?
14. Who was the famous monk that studied traits of pea plants?
15. Fill out the following Punnett Square for cattle coat color.
In cattle, brown coat is dominant (B), and white coat (b) is recessive.
a. What are the possible combinations of factors for a brown cow? ______ ______
b. What is the combination of factors for a white cow? _______
c. Make a Punnett Square for a male brown-coated bull with two different factors and a
female white cow.
d. What ratio would best describe the offspring? _________
e. What percentage of the offspring would be brown? ________
f. What percentage would be white? _________