BIOL 1107
BIOL 1107 Exam 4 – Principles of Biology I (Latest 2026/ 2027
Update) Review| 100% Verified Questions & Answers | Grade A
1.Assume antenna length is controlled by one gene with two alleles in fruit flies, and
long (A) is dominant to short (a). If you cross two parent flies and count 48 offspring
with long antennae and 15 offspring with short antennae, what are the likely
genotypes of the parent flies?: Aa and Aa
2.Which of the following represent two different genes when a bulldog has the
genotype AaBb?: A and b, A and B, B and a
3.Assume one gene determines gourd shape in diploid squash. Round is dominant to
long, and heterozygotes have oval gourds. Another gene affects gourd color, and
yellow is dominant to green. If the two genes are close to each other on a
chromosome, which Mendelian principles are violated?: Independent assortment and
dominance
4.Phenotype: observable traits
5.Genotype: alleles of individuals
6.What can influence phenotype?: genotype and environmental conditions
BIOL 1107
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BIOL 1107
7.Mendelian Genetics: has 3 principle such as dominance, segregation, and independent
assortment
8.J. Gregor Mendel: an austrian monk who used garden peas to establish rules of trait
inheritance in 1865 9. Principle of Dominance: states that some alleles are dominant
and others are recessive 10. Principle of Segregration: separate alleles of same genes
into different gametes.
11. Principle of Independent Assortment: genes for different traits can segregate
independently during the formation of gametes
12. What is the range of a probability?: A probability must be a number between 0
and 1
13. What must the sum of probabilities from all possible outcomes equal?: The sum of
probabilities from all possible outcomes must equal 1
14. What is the probability of either of two mutually exclusive events occurring?-
: The probability either one or the other occurs equals the sum of their probabilities
15. How do you calculate the probability that an event does not occur?: The
probability that an event does not occur equals 1 minus the probability that the event
does occur
16. What is incomplete dominance?: A non-Mendelian pattern of inheritance
BIOL 1107
BIOL 1107 Exam 4 – Principles of Biology I (Latest 2026/ 2027
Update) Review| 100% Verified Questions & Answers | Grade A
1.Assume antenna length is controlled by one gene with two alleles in fruit flies, and
long (A) is dominant to short (a). If you cross two parent flies and count 48 offspring
with long antennae and 15 offspring with short antennae, what are the likely
genotypes of the parent flies?: Aa and Aa
2.Which of the following represent two different genes when a bulldog has the
genotype AaBb?: A and b, A and B, B and a
3.Assume one gene determines gourd shape in diploid squash. Round is dominant to
long, and heterozygotes have oval gourds. Another gene affects gourd color, and
yellow is dominant to green. If the two genes are close to each other on a
chromosome, which Mendelian principles are violated?: Independent assortment and
dominance
4.Phenotype: observable traits
5.Genotype: alleles of individuals
6.What can influence phenotype?: genotype and environmental conditions
BIOL 1107
, 2
BIOL 1107
7.Mendelian Genetics: has 3 principle such as dominance, segregation, and independent
assortment
8.J. Gregor Mendel: an austrian monk who used garden peas to establish rules of trait
inheritance in 1865 9. Principle of Dominance: states that some alleles are dominant
and others are recessive 10. Principle of Segregration: separate alleles of same genes
into different gametes.
11. Principle of Independent Assortment: genes for different traits can segregate
independently during the formation of gametes
12. What is the range of a probability?: A probability must be a number between 0
and 1
13. What must the sum of probabilities from all possible outcomes equal?: The sum of
probabilities from all possible outcomes must equal 1
14. What is the probability of either of two mutually exclusive events occurring?-
: The probability either one or the other occurs equals the sum of their probabilities
15. How do you calculate the probability that an event does not occur?: The
probability that an event does not occur equals 1 minus the probability that the event
does occur
16. What is incomplete dominance?: A non-Mendelian pattern of inheritance
BIOL 1107
