Full Test Bank Germ Cells, Fertilization & Sex Chapter 9

Type: multiple choice question

Title: Chapter 9 - Question 01

01) Which of the options given is not true of Drosophila germ-line development?

a. Germ-line development begins in the anterior region of the egg

b. Germ cells are derived from pole cells.

c. Shifting the position of pole plasm shifts the position of germ cell specification

d. Germ cells are specified by inheriting cytoplasmic determinants

Type: multiple choice question

Title: Chapter 9 - Question 02

02) How many distinct germplasm regions are present in a zebrafish embryo?

a. 1

b. 2

c. 3

d. 4

Type: multiple choice question

Title: Chapter 9 - Question 03

03) Which of the options given represents the pathway of primordial germ-cell migration in the mouse embryo?

a. Hindgut – dorsal mesentery – primitive streak – genital ridge

b. Primitive streak – hindgut – dorsal mesentery – genital ridge

c. Dorsal mesentery – hindgut – primitive streak – genital ridge

d. Primitive streak – dorsal mesentery – hindgut – genital ridge

Type: multiple choice question

Title: Chapter 9 - Question 04

04) Which of the options given is true of mammalian oogenesis?

a. Meiosis gives rise to four daughter cells of equal size

b. Meiosis is complete only occurs after fertilization

c. Meiosis gives rise to four genetically identical daughter cells

d. Meiosis is completed while the female is an embryo

Type: multiple choice question

Title: Chapter 9 - Question 05

05) Which type of embryo is formed from the activation of an unfertilized egg?

a. Androgenetic

b. Gynogenetic

c. Parthenogenetic

d. Epigenetic

Type: multiple choice question

Title: Chapter 9 - Question 06

06) Which of the following refers to the silencing of germ-cell-specific genes during early development?

a. Germ-cell suppression

b. Sex-specific inhibition

c. Genomic imprinting

d. Genetic printing

Type: multiple choice question

Title: Chapter 9 - Question 07

07) What is the name of the Golgi-derived vesicle located in the head of sperm that aids in its penetration of the egg?

a. Cortical granule

b. Zona pellucida

c. Acrosome

d. Cumulus

Type: multiple choice question

Title: Chapter 9 - Question 08

08) What is the name of the Golgi-derived vesicle located under the plasma membrane of an egg to block polyspermy?

a. Cortical granule

b. Zona pellucida

c. Acrosome

d. Cumulus

Type: multiple choice question

Title: Chapter 9 - Question 09

09) Which ion controls the slow block to polyspermy?

a. Sodium

b. Calcium

c. Potassium

d. Chloride

Type: multiple choice question

Title: Chapter 9 - Question 10

10) The presence of an SRY sequence in a mammalian genome causes the degradation of which of these structures?

a. Wolffian duct

b. Vas deferens

c. Sertoli cells

d. Müllerian duct