Transcript Genetics Review Game - 7th Grade Science with Mrs. Grow

Genetics Review Game
Word Problems
1. In some species of dog, black fur color (B) is dominant to
brown fur color (b). What is the genotype of an individual that is
a purebred for brown fur?
Word Problems
2. In dragons, the allele for fire breathing is dominant (F).
What are two ways to write the genotype for a fire breathing
dragon?
Word Problems
3. If a heterozygous purple flowered pea plant (Aa) is crossed with
a white flowered plant (aa) how many of the offspring will have
white flowers? (Write the answer as a percentage).
Word Problems
4. In tomatoes, red fruit is dominant to yellow fruit. If two red
fruit heterozygous plants (Rr) are crossed, what is the ratio of
the offspring’s genotypes?
Word Problems
5. In cats, long hair is recessive to short hair. A true-breeding
(homozygous) short-haired male is mated to a long-haired female.
What will their kittens look like? ( Genotype and phenotype).
Word Problems
6. About 80% of the human population can taste the chemical
phenolthiocarbamide (PTC), while the other 20% can’t. This
characteristic is governed by a single gene with two alleles, a
tasting allele and a non-tasting allele. Based on this information,
which allele (tasting or non-tasting) is dominant?
Word Problems
7. Mr. and Mrs. Jones have six children. Three of them have
attached earlobes (recessive) like their father, and the other three
have free earlobes like their mother. What are the genotypes of Mr.
and Mrs. Jones and of their numerous offspring?
Word Problems
8. Mr. Smith does not have cystic fibrosis (CF) and neither does
his wife Sally. Their son, Fred is born with CF. What genotype
must Mr. and Mrs. Smith have in order to have a son with CF?
Word Problems
9. D is for no dimples and d is for dimples. A homozygous dominant
person (DD) is crossed with a heterozygous person (Dd)…
A. What is the offspring genotype and phenotype?
Word Problems
10. A rare bird is found in Africa. It has bright pink feathers that are
recessive to plain brown feathers. If you crossed a female with pink
feathers to a male with brown feathers that had the heterozygous
genotype, What % of the offspring would have bright pink feathers?
11. Where is DNA located in a cell?
12. Why is DNA important in a cell?
13. When does a dominant trait appear?
14. What does a recessive trait appear?
15. How many parents does an asexual reproducer have?
16. How many parents does a sexual reproducer have?
17. What is an example of a structural trait?
18. What is an example of a structural trait?
a.Dog barking at the mailman
b.Owl with a specific way of hunting
c.Flowers dispersing pollen in the wind
d.Man with a widows peak
19. What type of reproduction is a flower?
20. What form of asexual reproduction involves splitting a parent
cell into 2 identical daughter cells?
21. What kind of reproduction requires gametes?
22. What type of reproduction results in offspring that have
structural traits identical to the parents?
23. What type of asexual reproduction involves a bud growing
and detaching off of a parent and developing into an offspring.
24. Which of the following is an example of asexual
reproduction?
a.A bee pollinating a flower
b.Pollination occurring by pollen being blown around by the wind
c.A bud getting detached from the hydra parent
d.A frog laying eggs to be fertilized by a male
25. What type of reproduction helps a species better adapt to
changes in the environment?