PS8 – IA reteach HW
Name _______________ Section _______
You do NOT need to use complete sentences!
1) Define phenotype and give an example.
2) Define genotype and give an example.
3) What is the difference between phenotype and genotype?
4) Define homozygous and give an example.
5) Define heterozygous and give an example.
6) If you have a homozygous genotype, what are the 2 possible phenotypes you could have?
7) Define recessive and give an example.
8) What genotype MUST you have in order to get the recessive phenotype?
9) Define dominant and give an example.
10) If you have a dominant phenotype, what are the 2 different genotypes that you could have?
11. Jerome crossed two purple-flowered plants. The offspring produced from this cross had either
white flowers or purple flowers, as shown in the table below.
Which of the following statements best explains why some of the offspring have white flowers?
A. These offspring were created by asexual reproduction.
B. These offspring were produced in a dark environment.
C. These offspring inherited a DNA sequence coding for white flowers from each parent plant.
D. These offspring inherited a DNA sequence coding for white flowers from only one parent plant.
12. If there are two parents with identical, recessive PHENOTYPES, what must the
parents’ GENOTYPES look like?
13. If there are two parents with identical, dominant PHENOTYPES, what are the
options for each individual parent’s GENOTYPE?
14. Is it possible that the two parents to have DIFFERENT genotypes? How?
15. Of all of the options listed above, are there any that could produce children that
look totally different from their parents? What would the parents’ genotypes be in
this case? Draw a Punnett square to prove your answer.
(Hint: To figure it out, you can sketch a quick Punnett square for EVERY
combination of parent genotypes that you can think of, then predict what the children
will look like for all of those pairings. Usually the children look like the parents, but
not always!)