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WorksheetsDay 6 Bell Work (Monday 4/17)
Total questions: 6
Worksheet time: 3mins
Name
Class
Date
1.
Two heterozygous purple-flowering pea plants are crossed. If purple is dominant over white, what are the expected phenotypic results?
a)
75% purple, 25% white.
b)
100% purple.
c)
50% purple, 50% white.
d)
25% purple, 75% white.
e)
100% Pp
2.
The principles of probability can be used to
a)
predict the traits of the offspring of genetic crosses.
b)
determine the actual outcomes of genetic crosses.
c)
determine which species should be used in genetic crosses.
d)
decide which organisms are best to use in genetic crosses.
3.
Time to think! A parent (P) generation of plants is crossed. One parent is a tall plant (TT) and is crossed with a short plant (tt), which produces the F1 generation. If the tall F1 pea plants are allowed to self-pollinate & reproduce, what phenotypes will be shown by their offspring?
a)
all of the offspring will be tall.
b)
all of the offspring will be short.
c)
the offspring can be tall or short.
d)
the offspring will be of medium height.
4.
A heterozygous tall pea plant is crossed with a short plant. The probability that an offspring plant will be tall is
a)
25%
b)
100%
c)
75%
d)
50%
5.
What law BEST explains why an organism with ‘Tt’ will show only the dominant phenotype?
a)
Law of Dominance
b)
Law of Segregation
c)
Law of Independent Assortment
d)
Law of Filial Generations
6.
Two parents have the genotype Gg for a genetic disorder caused by a recessive allele. What is the chance that any of their children will inherit the disorder?
a)
25%
b)
50%
c)
75%
d)
100%
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