Ch5 STUDY GUIDE
NAME ____________________________
DATE _________________ BLOCK _____
1. Mendel concluded that an individual receives how many genes for each trait?
2. What ratio did Mendel obtain in the second generation every time he crossed first generation
hybrids?
3. How do homologous chromosomes differ from chromatids?
4. Perform the following Punnett Square:
P = purple flowers
Pp x Pp
p = white flowers
Offspring: Purple _____ %
White_____%
PP _____%
Pp _____%
pp _____%
5. Assume for pea plants:
P = purple flowers and p = white flowers
Give an example of genotypes that are: (a) homozygous dominant _____
(b) heterozygous _____ and (c) homozygous recessive _____
6. Describe the difference between genotype and phenotype and give an example of a genotype and
its phenotype from problem #5.
7. How does incomplete dominance differ from Mendelian heredity where there is one dominant
allele and one recessive allele?
8. Perform the following Punnett Square:
BB = black chickens
WW = white chickens
BW = blue chickens
Offspring: black _____ %
white_____%
blue _____%
BB _____%
WW _____%
BW _____%
BW x BW
9. Compare:
Mitosis
Meiosis
Purpose of process
Type of cell produced
How chromosomes line up in
metaphase
Number of chromosomes in
cells at end for humans
10. What contribution did Sutton make to the field of genetics?
11. What sex chromosomes do males have?
Females?
Perform a Punnett Square showing the probability of a male and female having a boy or girl child.
Offspring: Male _____ %
Female_____%
12. Define the following terms:
a.
b.
c.
d.
Allele
Dominant trait
Fertilization
Gamete
e. Gene
f. Heredity
g. Hybrid
h. Probability
i. Recessive trait
j. True-breeding
k. Zygote
13. List 3 traits in humans that are inherited:
List 3 traits in humans that are acquired:
14. (Honors) Cross RrYy x rrYY
(R = round peas, r = wrinkled peas, Y = yellow peas, y = green peas)
Round, yellow peas:
Round, green peas:
Wrinkled, yellow peas:
Wrinkled, green peas: