Long Test Genetics
CN: ____ Name: ________________ Gr. And Sec: _____
Date: ________________ Score: ______
True or False: Write TRUE if the statement is true and FALSE if
it is not. (10 pts.)
__________1. Allele is an alternative of a gene.
__________2. Recessive allele must be homozygous to be
physically expressed.
__________3. Gregor Mendel used coleus plants in his
studies about heredity.
__________4. Punnett square shows the exact number of
affected individuals in a test cross.
__________5. Mendel’s Law of Allele states that alleles
separate into gametes randomly and independently.
__________6.Mendel’s work was established before
knowledge about meiosis was known.
__________7. A female parent possessing one x-linked
recessive mutation is considered affected.
__________8. Offspring whose parents are affected with a
sex-linked dominant trait has a 50% chance of being affected.
__________9. Y-linked inheritance is the manifestation of a
phenotypic trait based on the mother’s genotype.
__________10. In a mitochondrial inheritance, the mother
passes the trait to her daughters only.
Long Test Genetics
CN: ____ Name: ________________ Gr. And Sec: _____
Date: ________________ Score: ______
True or False: Write TRUE if the statement is true and FALSE if
it is not. (10 pts.)
__________1. Allele is an alternative of a gene.
__________2. Recessive allele must be homozygous to be
physically expressed.
__________3. Gregor Mendel used coleus plants in his
studies about heredity.
__________4. Punnett square shows the exact number of
affected individuals in a test cross.
__________5. Mendel’s Law of segregation states that alleles
separate into gametes randomly and independently.
__________6.Mendel’s work was established before
knowledge about meiosis was known.
__________7. A female parent possessing one x-linked
recessive mutation is considered affected.
__________8. Offspring whose parents are affected with a
sex-linked dominant trait has a 50% chance of being affected.
__________9. Y-linked inheritance is the manifestation of a
phenotypic trait based on the mother’s genotype.
__________10. In a mitochondrial inheritance, the mother
passes the trait to her daughters only.
II. Problem Solving. (20 pts.) Write only the parentals and the
conclusion on each problem.
II. Problem Solving. (20 pts.) Write only the parentals and the
conclusion on each problem.
1.
Male pattern baldness is a recessive sex-linked trait on the
X chromosome. A woman, whose father had male pattern
baldness, marries a man with this trait. What is the
probability that any son born will have pattern baldness?
1.
Male pattern baldness is a recessive sex-linked trait on the
X chromosome. A woman, whose father had male pattern
baldness, marries a man with this trait. What is the
probability that any son born will have pattern baldness?
2.
Crosses between long and oval shaped radishes
produced 159 long and 156 oval types. Crosses between
oval and round gave 203 oval and 199 round. However,
crosses between oval and oval gave 121 long, 243 oval
and 119 round. How can you explain these results?
2.
Crosses between long and oval shaped radishes
produced 159 long and 156 oval types. Crosses between
oval and round gave 203 oval and 199 round. However,
crosses between oval and oval gave 121 long, 243 oval
and 119 round. How can you explain these results?
3.
Mortimer has type B blood. His wife Murgatroyd is
unsure of her blood type. If their first child, Magnifica, is
type B, their second offspring, Maximum, is AB and the
twins, Maud and Lyn, are A, can you determine the
genotypes of Mort and Murg?
3.
Mortimer has type B blood. His wife Murgatroyd is
unsure of her blood type. If their first child, Magnifica, is
type B, their second offspring, Maximum, is AB and the
twins, Maud and Lyn, are A, can you determine the
genotypes of Mort and Murg?
4.
In humans, widow’s peak (H) is dominant over a
continuous hairline (h), and short fingers (F) are
dominant over long fingers (f). Two heterozygotes with
widow’s peak and short fingers want to have a child with
continuous hairline and long fingers. What is the
possibility of them having child as such?
4.
In humans, widow’s peak (H) is dominant over a
continuous hairline (h), and short fingers (F) are
dominant over long fingers (f). Two heterozygotes with
widow’s peak and short fingers want to have a child with
continuous hairline and long fingers. What is the
possibility of them having child as such?