Post Lecture Quiz 3 Flashcards
1.Which of the following is a true statement about sexual vs. asexual reproduction?
A.In sexual reproduction, individuals transmit 50% of their genes to each of their offspring.
B.Sexual reproduction requires that parents be diploid.
C.In asexual reproduction, offspring are produced by fertilization without meiosis.
D.Asexual reproduction, but not sexual reproduction, is characteristic of plants and fungi.
E.Asexual reproduction produces only haploid offspring.
In sexual reproduction, individuals transmit 50% of their genes to each of their offspring.
2.A certain (hypothetical) organism is diploid, has either blue or orange wings as the consequence of
one of its genes on chromosome 12, and has either long or short antennae as the result of a second
gene on chromosome 19, as shown in the figure.
A female with a paternal set of one orange and one long gene chromosome and a maternal set
comprised of one blue and one short gene chromosome is expected to produce which of the following
types of eggs after meiosis?
A.Each egg has a three‐fourths chance of having blue long, one‐fourth blue short, three‐fourths
orange long, or one‐fourth orange short combinations.
B.All eggs will have paternal types of gene combinations.
C.Half the eggs will have maternal and half will have paternal combinations.
D.Each egg has a one‐fourth chance of having either blue long, blue short, orange long, or
orange short combinations.
E.All eggs will have maternal types of gene combinations.
Each egg has a one-fourth chance of having either blue long, blue short, orange long, or orange short
When homologous chromosomes cross over, what occurs?
A.Maternal alleles are “corrected” to be like paternal alleles and vice versa.
B.Two chromatids get tangled, resulting in one re‐sequencing its DNA.
C.Each of the four DNA strands of a homologous pair is broken, and the pieces are mixed.
D.Specific proteins break the two strands of nonsister chromatids and re‐join them.
E.Two sister chromatids exchange identical pieces of DNA.
Specific proteins break the two strands and re-join them with their homologs.
