BIO 100 Exam 4 Questions and
Answers 100% Solved
Which of the following describes the human ABO blood group system? -
CORRECT ANSWER-Multiple alleles
Gene S controls the sharpness of cactus spines. SS and Ss cactuses have sharp
spines while ss cactuses have dull spines. At the same time, a second gene, N,
determines whether cacti have spines or not. nn cacti have no spines at all. What is
the expected result of a cross between a true-breeding sharp-spined cactus and a
spinless cactus? - CORRECT ANSWER-All sharp-pined cacti offspring.
A cross between homozygous purple-flowered and homozygous white-flowered
pea plants results in offspring all with purple-flowers. This demonstrates... -
CORRECT ANSWER-simple dominance.
A woman with blood type A positive has a daughter who is type O positive and a
son who is type B negative. Rh positive (R) is a trait that shows simple dominance
over Rh negative (r). Which of the following is a possible partial genotype for the
son? - CORRECT ANSWER-IBi
, Hydrangea plants of the same genotype are planted in a large garden. Some of the
plants produce blue flowers and other produce pink flowers. This can be best
explained by which of the following statements? - CORRECT ANSWER-
Environmental factors such as soil pH affect flower color.
A 1:2:1 phenotypic ratio in the F2 generation of a monohybrid cross is a sign of... -
CORRECT ANSWER-incomplete dominance.
Two true-breeding stocks of pea plants are crossed. One parent has red, axial
flowers and the other has white, terminal flowers. All the F1 have red, axial
flowers. The genes for flower color and position assort independently. If 1000 F2
offspring from this cross, approximately how many of them would you expect to
have red, terminal flowers? - CORRECT ANSWER-190
It was important that Mendel examined not just the F1 generation in his breeding
experiments, but the F2 generation as well, because... - CORRECT ANSWER-
parental traits that were not observed in the F1 reappeared in the F2.
The following pedigree describes the inheritance pattern for the dominant trait for
wooly hair (W). Affected individuals are indicated by solid symbols.
What is the genotype of individual B-5? - CORRECT ANSWER-ww
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Answers 100% Solved
Which of the following describes the human ABO blood group system? -
CORRECT ANSWER-Multiple alleles
Gene S controls the sharpness of cactus spines. SS and Ss cactuses have sharp
spines while ss cactuses have dull spines. At the same time, a second gene, N,
determines whether cacti have spines or not. nn cacti have no spines at all. What is
the expected result of a cross between a true-breeding sharp-spined cactus and a
spinless cactus? - CORRECT ANSWER-All sharp-pined cacti offspring.
A cross between homozygous purple-flowered and homozygous white-flowered
pea plants results in offspring all with purple-flowers. This demonstrates... -
CORRECT ANSWER-simple dominance.
A woman with blood type A positive has a daughter who is type O positive and a
son who is type B negative. Rh positive (R) is a trait that shows simple dominance
over Rh negative (r). Which of the following is a possible partial genotype for the
son? - CORRECT ANSWER-IBi
, Hydrangea plants of the same genotype are planted in a large garden. Some of the
plants produce blue flowers and other produce pink flowers. This can be best
explained by which of the following statements? - CORRECT ANSWER-
Environmental factors such as soil pH affect flower color.
A 1:2:1 phenotypic ratio in the F2 generation of a monohybrid cross is a sign of... -
CORRECT ANSWER-incomplete dominance.
Two true-breeding stocks of pea plants are crossed. One parent has red, axial
flowers and the other has white, terminal flowers. All the F1 have red, axial
flowers. The genes for flower color and position assort independently. If 1000 F2
offspring from this cross, approximately how many of them would you expect to
have red, terminal flowers? - CORRECT ANSWER-190
It was important that Mendel examined not just the F1 generation in his breeding
experiments, but the F2 generation as well, because... - CORRECT ANSWER-
parental traits that were not observed in the F1 reappeared in the F2.
The following pedigree describes the inheritance pattern for the dominant trait for
wooly hair (W). Affected individuals are indicated by solid symbols.
What is the genotype of individual B-5? - CORRECT ANSWER-ww
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED
