Modified True/False
Indicate whether the statement is true or
false. If false, change the identified word or phrase to make the statement true.
|
|
|
1.
|
The phenotype is the form of a trait that an organism displays.
____________________
|
|
|
2.
|
The form of a gene that is hidden when the dominant allele is present is called
recessive. ____________________
|
|
|
3.
|
If an organism has a genotype with a recessive and dominant allele, the dominant
trait is always shown. ____________________
|
|
|
4.
|
Mendel found that the ratio of purple flowers to white flowers was 3:1
in the second generation of offspring. ____________________
|
Completion
Complete each statement.
|
|
|
Select the correct term to complete each sentence. There are extra terms in
the list.| recessive | dominant | phenotype | | genotype | percent | chromosomes | | alleles | genes | heredity | | punnett square | purple | white | | cross-pollination | Gregor Mendel | Walter Sutton | | Alfred Wegener | self-pollination | yellow | | incomplete dominance | codominance | polygenic traits | | Yy | YY | yy | | | |
|
|
|
5.
|
An organism’s ____________________ is the set of traits it receives from
its parents.
|
|
|
6.
|
Individual units called ____________________ determine an organism’s
traits.
|
|
|
7.
|
A ____________________ allele is usually represented by a capital letter.
|
|
|
8.
|
A yellow seeded pea plant (YY) is crossed with a green seeded (yy) pea plant.
The genotype of the first generation of peas is ____________________.
|
|
|
9.
|
In the gene combination Gg for pod color, g is the ____________________
allele.
|
|
|
10.
|
A useful tool you can use to show all the possible combinations of alleles from
the parents is called a(n) _________________________.
|
|
|
11.
|
Probability can be expressed as a ____________________.
|
|
|
12.
|
Genes are located on _________________________.
|
|
|
13.
|
The ____________________ for a human with the gene combination (ff) for earlobes
is attached earlobes.
|
Short Answer
|
|
|
14.
|
White flower color is recessive to purple flower color in pea plants. If a pea
plant has white flowers, what is the genotype and phenotype of the pea plant?
|
|
|
15.
|
What can you predict about the offspring if you know the genotypes of the
parents?
|
Essay
|
|
|
16.
|
In your own words, describe the 5 laws of heredity that combine the work of
Mendel and Sutton.
|
Other
|
|
|
17.
|
 An offspring has
a genotype Pp, and one parent has a genotype pp. Using a punnett square, what is the genotype of the
other parent?
|
|
|
18.
|
Using a punnett square, what is the ratio of round seeds (R) to wrinkled seeds
(r) when a plant with round seeds (Rr) is crossed with a plant with wrinkled seeds (rr)?
|