Dihybrid and Biotechnology Pre-Test. 1.(B.6F) A breeding experiment that tracks the inheritance of two traits is called a A. Monohybrid B. Dihybrid.
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Dihybrid and Biotechnology
Pre-Test
1. (B.6F) A breeding experiment that tracks the inheritance of two traits
is called a …
A. MonohybridB. DihybridC. Special CaseD. Segregation law
2. (B.6H) Using the DNA fingerprint provided, which man is the child’s biological father?
a) Man Pb) Man Qc) Man Rd) None of the
men fathered this child
3. (B.6H) Which of the following can best be determined by examining this karyotype?
A. The presence of an additional chromosome
B. The presence of a homozygous genotype
C. The person’s genomeD. The person’s
phenotype
4. (B.6F) What are the genotypic percentages of the offspring in the monohybrid cross?
a)Bb, 100%b)BB 50% : Bb 25%: bb
25% c) BB 25%: Bb 50% : bb
25%d)BB 25% : bb 75%
5. (B.6F) An agricultural scientist wants to help develop a
variety of raspberry that will mature rapidly and will produce
high yields (lots of fruit). Which of the following parent
combinations should the scientist cross to produce the desired
offspring?a)hhmmTt X hhMMttb)HHmmtt X hhMMttc) hhMmtt X Hhmmttd)HHmmtt X hhMmtt
Inherited Traits in Raspberry Plants
Phenotype GenotypeLow – yield HHigh – yield hRapidly maturing MSlow maturing mTall TShort tYellow kernels YWhite kernels y
6. (B.6F) In a certain species of tulip plant, red flowers and blue flowers are incompletely dominant to one another. When a red tulip (RR) is crossed with a blue tulip (rr), a purple tulip (Rr) is produced. What is the probability of
producing more purple tulips if two purple tulips (Rr) are crossed?
A.0%
B.25%
C.50%
D.100%
7. (B.6F) In bullet ants, the sex-linked gene for abdomen length is located on the X
chromosome, and the long abdomen allele (A) is dominant to the short abdomen allele (a). A female bullet ant with the genotype XAXa is mated with a male ant with the
genotype XaY.Which of the following statements best describes
the expected outcome of the cross?A. The chance that a male offspring will have a short
abdomen is 0%.B. The chance of an offspring having a short abdomen
is 50%.C. The chance of an offspring having a long abdomen is
75%.D. The chance that a female offspring will have a long
abdomen is 100%.
8. (B.6F) Using the pedigree, identify which of the following represent an affected female.
a)II4b)IV8c)V1d)III8
A. BR, Br, bR, brB. BR, BR, bR, bRC. BR, BR, bR, RRD. Bb, BR, bR, bR
9. If a mother has the genotype BbRR, what are her possible
genotype gametes?
Inherited Traits in Rats
Phenotype GenotypePointy Ears E
Rounded Ears eCurly Toes N
Straight Toes n
10.Make a dihybrid cross:EeNn X EeNn
11. What is the phenotypic ratio of the possible offspring?12. What is the probability that the offspring will have rounded ears and curly toes?
DihybridsPre-TestAnswers
1. (B.6F) A breeding experiment that tracks the inheritance of two traits
is called a …
A. MonohybridB. DihybridC. Special CaseD. Segregation law
2. (B.6H) Using the DNA fingerprint provided, which man is the child’s biological father?
a) Man Pb) Man Qc) Man Rd) None of the
men fathered this child
3. (B.6H) Which of the following can best be determined by examining this karyotype?
A. The presence of an additional chromosome
B. The presence of a homozygous genotype
C. The person’s genomeD. The person’s
phenotype
4. (B.6F) What are the genotypic percentages of the offspring in the monohybrid cross?
a)Bb, 100%b)BB 50% : Bb 25%: bb
25% c) BB 25%: Bb 50% : bb
25%d)BB 25% : bb 75%
5. (B.6F) An agricultural scientist wants to help develop a variety of raspberries that will
mature rapidly and will produce high yields (lots of fruit). Which of
the following parent combinations should the scientist
cross to produce the desired offspring?a)hhmmTt X hhMMtt
b)HHmmtt X hhMMttc) hhMmtt X Hhmmttd)HHmmtt X hhMmtt
Inherited Traits in Raspberry Plants
Phenotype GenotypeLow – yield HHigh – yield hRapidly maturing MSlow maturing mTall TShort tYellow kernels YWhite kernels y
6. (B.6F) In a certain species of tulip plant, red flowers and blue flowers are incompletely dominant to one another. When a red tulip (RR) is crossed with a blue tulip (rr), a purple tulip (Rr) is produced. What is the probability of
producing more purple tulips if two purple tulips (Rr) are crossed?
A.0%
B.25%
C.50%
D.100%
7. (B.6F) In bullet ants, the sex-linked gene for abdomen length is located on the X
chromosome, and the long abdomen allele (A) is dominant to the short abdomen allele (a). A female bullet ant with the genotype XAXa is mated with a male fly with the
genotype XaY.Which of the following statements best describes
the expected outcome of the cross?A. The chance that a male offspring will have a short
abdomen is 0%.B. The chance of an offspring having a short abdomen
is 50%.C. The chance of an offspring having a long abdomen is
75%.D. The chance that a female offspring will have a long
abdomen is 100%.
8. (B.6F) Using the pedigree, identify which of the following represent an affected female.
a)II4b)IV8c)V1d)III8
A. BR, Br, bR, brB. BR, BR, bR, bRC. BR, BR, bR, RRD. Bb, BR, bR, bR
9. If a mother has the genotype BbRR, what are her possible
genotype gametes?
Inherited Traits in Rats
Phenotype GenotypePointy Ears E
Rounded Ears eCurly Toes N
Straight Toes n
10.Make a dihybrid cross:EeNn X EeNn
11. What is the phenotypic ratio of the possible offspring?12. What is the probability that the offspring will have rounded ears and curly toes?
EN En eN en
EN EENN EENn EeNN EeNn
En EENn EEnn EeNn Eenn
eN EeNN EeNn eeNN eeNn
en EeNn Eenn eeNn eenn
EN En eN en
EN EENN EENn EeN
N EeNn
En EENn EEnn EeNn Eenn
eN EeNN EeNn eeNN eeNn
en EeNn Eenn eeNn eenn
pointy ears, curly toes : pointy ears, straight toes : round ears, curly toes: round ears, straight toes 9:3:3:1
11.
EN En eN en
EN EENN EENn EeN
N EeNn
En EENn EEnn EeNn Eenn
eN EeNN EeNn eeNN eeNn
en EeNn Eenn eeNn eenn
12.
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