BSC 170 FINAL EXAM QUESTIONS|
WITH ALREADY SOLVED CORRECTLY
ANSWERS!! | ASSURED SUCCESS
How sex determination takes place in humans (chromosomes and specific
gene) - 🧠ANSWER ✔✔ZZ-ZW system:
ZZ - male
ZW - female
Birds, snakes, butterflies, some amphibians, and fishes
Haplodiploidy system:
Haploid set - male
Diploid set - female
Bees, wasps, and ants
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,Sex-linked inheritance patterns (more common in males but present in
females) - 🧠ANSWER ✔✔
Sex determination in animals (XO, ZW, and haplo diploid system) -
🧠ANSWER ✔✔
X-inactivation and how it results in mosaicism - 🧠ANSWER ✔✔
Sex chromosome aneuploidy and some specific examples in humans
(Klinefelter, and Turner) - 🧠ANSWER ✔✔
Genetic, epigenetic, and physiological factors involved in sexual orientation
of males - 🧠ANSWER ✔✔Strong genetic component to sexual preference
Both genetic and epigenetic components have been characterized
Strong heritability in twin studies
A region on the X chromosome has been identified by several studies
Xq28
Both genetic and epigenetic factors map to this region
Region on chromosome 8 also has strong association
Consistent with patterns of inheritance
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
2
STATEMENT. ALL RIGHTS RESERVED
, Mother's brother
Xq28 and its role in male homosexuality - 🧠ANSWER ✔✔A region on the X
chromosome has been identified by several studies
Xq28
Both genetic and epigenetic factors map to this region
The current hypothesis explaining why genes encoding homosexuality
haven't been lost due to selective pressure - 🧠ANSWER ✔✔
Traits associated with attractiveness in humans - 🧠ANSWER ✔✔Sexual
orientation can be gay, straight, weak or strong
Innate attraction are traits that human subconscious finds attractive
Symmetry in face and body
Sign of mom's good health during pregnancy
Sign of dad's ability to provide food and shelter
Pheromones are scent molecules released
Attractive pheromones are linked to symmetry to also linked to mom and
dad
Personal attraction
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
WITH ALREADY SOLVED CORRECTLY
ANSWERS!! | ASSURED SUCCESS
How sex determination takes place in humans (chromosomes and specific
gene) - 🧠ANSWER ✔✔ZZ-ZW system:
ZZ - male
ZW - female
Birds, snakes, butterflies, some amphibians, and fishes
Haplodiploidy system:
Haploid set - male
Diploid set - female
Bees, wasps, and ants
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,Sex-linked inheritance patterns (more common in males but present in
females) - 🧠ANSWER ✔✔
Sex determination in animals (XO, ZW, and haplo diploid system) -
🧠ANSWER ✔✔
X-inactivation and how it results in mosaicism - 🧠ANSWER ✔✔
Sex chromosome aneuploidy and some specific examples in humans
(Klinefelter, and Turner) - 🧠ANSWER ✔✔
Genetic, epigenetic, and physiological factors involved in sexual orientation
of males - 🧠ANSWER ✔✔Strong genetic component to sexual preference
Both genetic and epigenetic components have been characterized
Strong heritability in twin studies
A region on the X chromosome has been identified by several studies
Xq28
Both genetic and epigenetic factors map to this region
Region on chromosome 8 also has strong association
Consistent with patterns of inheritance
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
2
STATEMENT. ALL RIGHTS RESERVED
, Mother's brother
Xq28 and its role in male homosexuality - 🧠ANSWER ✔✔A region on the X
chromosome has been identified by several studies
Xq28
Both genetic and epigenetic factors map to this region
The current hypothesis explaining why genes encoding homosexuality
haven't been lost due to selective pressure - 🧠ANSWER ✔✔
Traits associated with attractiveness in humans - 🧠ANSWER ✔✔Sexual
orientation can be gay, straight, weak or strong
Innate attraction are traits that human subconscious finds attractive
Symmetry in face and body
Sign of mom's good health during pregnancy
Sign of dad's ability to provide food and shelter
Pheromones are scent molecules released
Attractive pheromones are linked to symmetry to also linked to mom and
dad
Personal attraction
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
