Question 1

As sperm are transported through the ducts system,what secretions are added from which three sets of glands to make up semen?

Accepted Answer

The seminal vesicles secrete fructose,a sugar that serves as an energy source for the sperm,and prostaglandins,locally acting chemical messengers that stimulate contraction of the female reproductive system to assist in sperm movement.The prostate gland secretes a milky,alkaline fluid that neutralizes acidic vaginal secretions and enhances sperm viability.The bulbourethral glands secrete a mucuslike substance that provides lubrication for intercourse.Together,the sperm and these various glandular secretions make up semen,a mixture that is about 95% secretions and about 5% spermatozoa.

Question 2

Because females carry two X chromosomes and males carry only one,females have higher levels of all products encoded by genes on the X chromosome.

Accepted Answer

A) True 
 B)False  False

Question 3

The process of ____________________ equalizes the dosage of functional genes carried on the X chromosome in males and females.

Accepted Answer

X inactivation

Question 4

A condition called ____________________ results in individuals having both male and female sexual structures at different times in their lives.

Accepted Answer

gonadal in

Question 5

Describe the Lyon hypothesis.

Accepted Answer

Mary Lyon studied the inheritance of coa

Question 6

The lower neck of the uterus opening into the vagina is the ____________________.

Accepted Answer

The answer of The lower neck of the uterus opening...

Question 7

The chorionic villi eventually form the placenta,a disc-shaped structure that ____.

Accepted Answer

A)  releases sex hormones at appropriate times throughout pregnancy 
B)  initiates uterine contractions 
C)  binds to the zygote to accelerate organ development 
D)  nourishes the embryo throughout pregnancy 
E)  prevents infection by blocking the passage of microorganisms through the cervix during pregnancy 
A)  releases sex hormones at appropriate times throughout pregnancy 
B)  initiates uterine contractions 
C)  binds to the zygote to accelerate organ development 
D)  nourishes the embryo throughout pregnancy 
E)  prevents infection by blocking the passage of microorganisms through the cervix during pregnancy

Question 8

The brain and nervous system of a developing embryo can only be damaged during the very early stages of development.

Accepted Answer

A) True 
 B)False

Question 9

In an XX embryo,____ inactivation of one X chromosome usually occurs when the embryo has about 32 cells.

Accepted Answer

A)  phenotypic 
B)  inhibited 
C)  cascading 
D)  selective 
E)  random 
A)  phenotypic 
B)  inhibited 
C)  cascading 
D)  selective 
E)  random

Question 10

The small region of an inactivated X chromosome that is not inactivated contains ____________________ homologous to those on the Y chromosome.

Accepted Answer

The answer of The small region of an inactivated X...

Question 11

Any physical or chemical agent that brings about an increase in congenital malformations is called a(n)____.

Accepted Answer

A)  teratogen 
B)  hormone 
C)  ARX factor 
D)  cytocin 
E)  trophoblast 
A)  teratogen 
B)  hormone 
C)  ARX factor 
D)  cytocin 
E)  trophoblast

Question 12

A blastocyst ____.

Accepted Answer

A)  releases hormones in the myometrium 
B)  releases the egg into the oviduct 
C)  implants in the endometrium 
D)  matures into a chorion 
E)  metabolically supports embryonic and fetal development 
A)  releases hormones in the myometrium 
B)  releases the egg into the oviduct 
C)  implants in the endometrium 
D)  matures into a chorion 
E)  metabolically supports embryonic and fetal development

Question 13

A zygote is a(n)____.

Accepted Answer

A)  diploid cell 
B)  haploid cell 
C)  gamete 
D)  female gonad 
E)  male gonad 
A)  diploid cell 
B)  haploid cell 
C)  gamete 
D)  female gonad 
E)  male gonad

Question 14

Female gametes complete meiosis II at ____________________.

Accepted Answer

The answer of Female gametes complete meiosis II at ____________________....

Question 15

In the male reproductive system,the ____________________ secretes a milky,alkaline fluid that neutralizes acidic vaginal secretions and enhances sperm viability.

Accepted Answer

prostate g

Question 16

Gonadal sex and sexual phenotype in males and females are produced by separate developmental pathways by the action of different gene sets.

Accepted Answer

A) True 
 B)False

Question 17

Describe the stages at which genetic sex,gonadal sex,and phenotypic sex are established.

Accepted Answer

The sex of an individual is formed in th

Question 18

The undifferentiated genitalia of an early human embryo develops into male genitalia under the influence of ____.

Accepted Answer

A)  oxytocin 
B)  prostaglandin and DHT 
C)  prolactin 
D)  testosterone, AMH, and DHT 
E)  Wolfian duct inhibitors 
A)  oxytocin 
B)  prostaglandin and DHT 
C)  prolactin 
D)  testosterone, AMH, and DHT 
E)  Wolfian duct inhibitors

Question 19

The hormone oxytocin stimulates ____.

Accepted Answer

A)  meiosis of oogonia 
B)  ovulation 
C)  implantation of the embryo 
D)  development of the fetal heart 
E)  contraction of uterine muscles during childbirth 
A)  meiosis of oogonia 
B)  ovulation 
C)  implantation of the embryo 
D)  development of the fetal heart 
E)  contraction of uterine muscles during childbirth

Question 20

An embryo that is composed of a hollow ball of cells is called a blastocyst.

Accepted Answer

A) True 
 B)False

As sperm are transported through the ducts system,what secretions are added from which three sets of glands to make up semen?

Because females carry two X chromosomes and males carry only one,females have higher levels of all products encoded by genes on the X chromosome.

The process of ____________________ equalizes the dosage of functional genes carried on the X chromosome in males and females.

A condition called ____________________ results in individuals having both male and female sexual structures at different times in their lives.

Describe the Lyon hypothesis.

The lower neck of the uterus opening into the vagina is the ____________________.

The chorionic villi eventually form the placenta,a disc-shaped structure that ____.

The brain and nervous system of a developing embryo can only be damaged during the very early stages of development.

In an XX embryo,____ inactivation of one X chromosome usually occurs when the embryo has about 32 cells.

The small region of an inactivated X chromosome that is not inactivated contains ____________________ homologous to those on the Y chromosome.

Any physical or chemical agent that brings about an increase in congenital malformations is called a(n)____.

A blastocyst ____.

A zygote is a(n)____.

Female gametes complete meiosis II at ____________________.

In the male reproductive system,the ____________________ secretes a milky,alkaline fluid that neutralizes acidic vaginal secretions and enhances sperm viability.

Gonadal sex and sexual phenotype in males and females are produced by separate developmental pathways by the action of different gene sets.

Describe the stages at which genetic sex,gonadal sex,and phenotypic sex are established.

The undifferentiated genitalia of an early human embryo develops into male genitalia under the influence of ____.

The hormone oxytocin stimulates ____.

An embryo that is composed of a hollow ball of cells is called a blastocyst.

A Perspective on Human Genetics

Cells and Cell Division

Transmission of Genes from Generation to Generation

Pedigree Analysis in Human Genetics

The Inheritance of Complex Traits

Cytogenetics - Karyotypes and Chromosome Aberrations

The Structure - Replication - and Chromosomal Organization of DNA

Gene Expression and Gene Regulation

From Proteins to Phenotypes

Genome Alterations - Mutation and Epigenetics

Genes and Cancer

An Introduction to Genetic Technology

Biotechnology and Society

Genomes and Genomics

Reproductive Technology - Genetic Testing - and Gene Therapy

Genes and The Immune System

Genetics of Behavior

Population Genetics and Human Evolution

Filters

Exam 7: Development and Sex Determination

As sperm are transported through the ducts system,what secretions are added from which three sets of glands to make up semen?

Because females carry two X chromosomes and males carry only one,females have higher levels of all products encoded by genes on the X chromosome.

The process of ____________________ equalizes the dosage of functional genes carried on the X chromosome in males and females.

A condition called ____________________ results in individuals having both male and female sexual structures at different times in their lives.

Describe the Lyon hypothesis.

The lower neck of the uterus opening into the vagina is the ____________________.

The chorionic villi eventually form the placenta,a disc-shaped structure that ____.

The brain and nervous system of a developing embryo can only be damaged during the very early stages of development.

In an XX embryo,____ inactivation of one X chromosome usually occurs when the embryo has about 32 cells.

The small region of an inactivated X chromosome that is not inactivated contains ____________________ homologous to those on the Y chromosome.

Any physical or chemical agent that brings about an increase in congenital malformations is called a(n)____.

A blastocyst ____.

A zygote is a(n)____.

Female gametes complete meiosis II at ____________________.

In the male reproductive system,the ____________________ secretes a milky,alkaline fluid that neutralizes acidic vaginal secretions and enhances sperm viability.

Gonadal sex and sexual phenotype in males and females are produced by separate developmental pathways by the action of different gene sets.

Describe the stages at which genetic sex,gonadal sex,and phenotypic sex are established.

The undifferentiated genitalia of an early human embryo develops into male genitalia under the influence of ____.

The hormone oxytocin stimulates ____.

An embryo that is composed of a hollow ball of cells is called a blastocyst.

A Perspective on Human Genetics

Cells and Cell Division

Transmission of Genes from Generation to Generation

Pedigree Analysis in Human Genetics

The Inheritance of Complex Traits

Cytogenetics - Karyotypes and Chromosome Aberrations

The Structure - Replication - and Chromosomal Organization of DNA

Gene Expression and Gene Regulation

From Proteins to Phenotypes

Genome Alterations - Mutation and Epigenetics

Genes and Cancer

An Introduction to Genetic Technology

Biotechnology and Society

Genomes and Genomics

Reproductive Technology - Genetic Testing - and Gene Therapy

Genes and The Immune System

Genetics of Behavior

Population Genetics and Human Evolution

Filters