Biology Chapter 13 - 2019 Batch
.
- 1.Which of the following is a true statement about sexual vs. asexual reproduction?
- A.
Asexual reproduction, but not sexual reproduction, is characteristic of plants and fungi.
- B.
In sexual reproduction, individuals transmit 50% of their genes to each of their offspring.
- C.
In asexual reproduction, offspring are produced by fertilization without meiosis.
- D.
Sexual reproduction requires that parents be diploid.
- E.
Asexual reproduction produces only haploid offspring.
- 2.Which of the following defines a genome?
- A.
Representation of a complete set of a cell's polypeptides
- B.
The complete set of an organism's polypeptides
- C.
The complete set of a species' polypeptides
- D.
The complete set of a species' polypeptides
- E.
The complete set of an organism's genes
- 3.The human X and Y chromosomes
- A.
Are both present in every somatic cell of males and females alike.
- B.
Are of approximately equal size and number of genes.
- C.
Are almost entirely homologous, despite their different names
- D.
Include genes that determine an individual's sex
- E.
Include only genes that govern sex determination.
- 4.Which of the following is true of a species that has a chromosome number of 2n = 16?
- A.
The species is diploid with 32 chromosomes per cell.
- B.
The species has 16 sets of chromosomes per cell.
- C.
Each cell has eight homologous pairs.
- D.
During the S phase of the cell cycle there will be 32 separate chromosomes.
- E.
A gamete from this species has four chromosomes.
- 5.Which of these statements is false?
- A.
In humans, each of the 22 maternal autosomes has a homologous paternal chromosome.
- B.
In humans, the 23rd pair, the sex chromosomes, determines whether the person is female (XX) or male (XY).
- C.
Single, haploid (n) sets of chromosomes in ovum and sperm unite during fertilization, forming a diploid (2n), single-celled zygote.
- D.
At sexual maturity, ovaries and testes produce diploid gametes by meiosis.
- E.
Sexual life cycles differ with respect to the relative timing of meiosis and fertilization.
- 6.Referring to a plant's sexual life cycle, which of the following terms describes the process that leads directly to the formation of gametes?
- A.
Sporophyte meiosis
- B.
Gametophyte mitosis
- C.
Gametophyte meiosis
- D.
Sporophyte mitosis
- E.
Alternation of generations
- 7.At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype?
- A.
Prophase
- B.
Metaphase
- C.
Anaphase
- D.
Telophase
- E.
Interphase
- 8.A triploid cell contains three sets of chromosomes. If a cell of a usually diploid species with 42 chromosomes per cell is triploid, this cell would be expected to have which of the following?
- A.
63 chromosomes in 31 1/2 pairs
- B.
63 chromosomes in 21 sets of 3
- C.
63 chromosomes, each with three chromatids
- D.
21 chromosome pairs and 21 unique chromosomes
- 9.Which life cycle stage is found in plants but not animals?
- A.
Gamete
- B.
Zygote
- C.
Multicellular diploid
- D.
Multicellular haploid
- E.
Unicellular diploid
- 10.Homologous chromosomes move toward opposite poles of a dividing cell during
- A.
Mitosis
- B.
Meiosis I
- C.
Meiosis II
- D.
Fertilization
- E.
Binary fission
- 11.Meiosis II is similar to mitosis in that
- A.
Sister chromatids separate during anaphase.
- B.
DNA replicates before the division.
- C.
The daughter cells are diploid.
- D.
Homologous chromosomes synapse.
- E.
The chromosome number is reduced
- 12.If the DNA content of a diploid cell in the G1 phase of the cell cycle is x, then the DNA content of a single cell at metaphase of meiosis II would be
- A.
0.25x
- B.
0.5x
- C.
X
- D.
2x
- E.
4x
- 13.How many different combinations of maternal and paternal chromosomes can be packaged in gametes made by an organism with a diploid number of 8 (2n = 8)?
- A.
2
- B.
4
- C.
8
- D.
16
- E.
32
- 14.When does the synaptonemal complex disappear?
- A.
Late prophase of meiosis I
- B.
During fertilization or fusion of gametes
- C.
Early anaphase of meiosis I
- D.
Mid-prophase of meiosis II
- E.
Late metaphase of meiosis II
- 15.Chromatids are separated from each other.
- A.
The statement is true for mitosis only.
- B.
The statement is true for meiosis I only.
- C.
The statement is true for meiosis II only
- D.
The statement is true for mitosis and meiosis I.
- E.
The statement is true for mitosis and meiosis II.
- 16.
In this picture, A represent- A.
Haploid unicellular
- B.
Haploid multicellular
- C.
Gametes
- D.
Spores
- E.
None of the above
- 17.
Which phase of meioses this picture shows
- A.
Anaphase l
- B.
Metaphase ll
- C.
Metaphase l
- D.
Anaphase ll
- E.
Metaphase
- 18.
In this picture A represent
- A.
Alleles
- B.
Locus
- C.
Cohesion
- D.
Synaptonemal
- E.
Genes
- 19.A tetrad includes which of the following sets of DNA strands?
- A.
Two single-stranded chromosomes that have synapsed
- B.
Two sets of sister chromatids that have synapsed
- C.
Four sets of sister chromatids
- D.
Four sets of unique chromosomes
- E.
Eight sets of sister chromatids
- 20.
Which diagram represents anaphase I of meiosis?
- A.
I
- B.
II
- C.
IV
- D.
V
- E.
VI
Questions: 44 | Attempts: 272 | Last updated: Mar 22, 2022
-
Sample QuestionGenes:
Questions: 21 | Attempts: 82 | Last updated: Mar 20, 2022
-
Sample QuestionThe transfer of genetic material from one organism to another is
Questions: 6 | Attempts: 103 | Last updated: Mar 21, 2022
-
Sample QuestionWhich of the following elements is least abundant in your body
Back to top