Heredity and Meiosis Study Guide
Test is Friday Oct. 30
1. Make a Punnett Square with the following parents.
Parent 1= Nn
Parent 2= Nn
N is dominant for large nose/ n is recessive for small nose.
2.
3.
4.
5.
What is the possible percentage of heterozygous children?
What is the possible percentage of homozygous children?
What is the possible ratio of children born with large noses?
What is the possible ratio of children born with small noses?
Matching:
___6. the different forms of a gene
___7. occupies a specific space on a chromosome
___8. the actual physical appearance of a trait
___9. the actual alleles that code for a trait
___10. the same alleles
___11. different alleles
___12. a chart used to predict the probability of a child having a trait.
___13. an allele that is represented by an uppercase letter: only one has to be present to
show the phenotype
___14. an allele that is represented by a lower case letter: must have 2 present for the
phenotype to show up
a. Punnett Square
b. Gene
c. Genotype
d. Phenotype
e. Allele
f. Homozygous
g. Heterozygous
h. Recessive
i. Dominant
Circle the heterozygous alleles and place a square around the homozygous alleles below:
15. AA
Aa
aa
16. Meiosis divides twice while mitosis divides _________________________.
17. At the end of mitosis you have ___cells and at the end of meiosis you have
____cells. (Hint: number)
18. Meiosis produces haploid cells. What is a haploid cell?
19. How many chromosomes are in gametes?
20. What is a female gamete called?
21. What is a male gamete called?
22. What is a gamete?
23. What kind of cells is produced at the end of mitosis?
24. Somatic cells undergo mitosis. What kinds of cells undergo meiosis?
25. Why do we need the mitosis process? Why do we need the meiosis process?
26. If a fruit fly has 8 chromosomes and it undergoes meiosis, how many chromosomes
will the egg cell have? A. 8 B. 16 C. 4
D. 2
Match the correct Mendel’s Law.
27. ___The dominant allele will always show or express itself it is present.
28. ___During meiosis the alleles are separated.
29. ___Inheritance of one trait does not affect the inheritance of other traits.
a. Law of Independent Assortment
b. Law of Segregation
c. Law of Dominance