193 cards
In ____ of meiosis, homologous chromosomes line up on opposite sides of the metaphase plate.
In ____ of meiosis, homologous chromosomes are pulled to opposite poles of the cell.
In anaphase I of meiosis, ____
____ of meiosis accounts for Mendel's first law of segregation.
Anaphase I of meiosis accounts for ____
In ____ of meiosis, the chromosomes may or may not fully decondense, and the cell may enter interkinesis after cytokinesis.
In telophase I of meiosis, ____
____ is a period of rest that cells of some species enter during meiosis between meiosis I and meiosis II.
In meiosis II , ____
Mutations in the ____ chromosome causes sex-linked disorders.
Mutations in the X chromosome causes ____ disorders.
Males are termed ____ with respect to many of the genes on the X chromosome.
Females carrying a diseased allele on an X-chromosome but not exhibiting the disease are said to be ____.
____ chromosome contains little genetic information.
One notable gene on the Y chromosome is ____.
SRY ( sex-determining region Y ) codes for ____.
____ codes for a transcription factor that initiates testis differentiation and, thus, the formation of male gonads.
In males, the primitive gonads develop into the ____.
The testes have two functional components: the ____.
Sperm are produced in ____.
Sperm are nourished by ____.
The cells of Leydig secrete ____.
The ____ secrete testosterone and other male sex hormones ( androgens ).
The testes are located in the ____ .
Scrotum's position allows it to maintain a temperature ____ the body.
As sperm are formed they are passed to the ____ .
In the epididymis, ____
In the ____, the flagella of sperm gain motility and sperm are stored until ejaculation.
During ejaculation , sperm travel through the ____.
Pathway of Sperm: - ____
As sperm pass through the reproductive tract they are mixed with ____ .
Seminal fluid is produced through a combined effort by ____.
____ is produced through a combined effort by the seminal vesicles, prostate gland, and bulbourethral gland.
The ____ contribute fructose to nourish sperm.
The seminal vesicles contribute ____ to nourish sperm.
Both the ____and give the seminal fluid mildly alkaline properties.
Both the seminal vesicles and prostate gland give the seminal fluid ____ properties.
The ____ produce a clear viscous fluid that cleans out any remnants of urine and lubricates the urethra during sexual arousal.
The bulbourethral ( Cowper’s ) glands produce a ____
The combination of ____d is known as semen.
The combination of sperm and seminal fluid is known as ____.
____ is the formation of haploid sperm through meiosis.
Spermatogenesis is the formation of ____.
Spermatogenesis occurs in the ____.
In males, ____ are known as spermatogonia.
In males, the diploid stem cells are known as ____.
After replicating the genetic material of spermatogonia, they develop into ____.
After replicating the genetic material of ____, they develop into diploid primary spermatocytes.
The first meiotic division in spermatogenesis will result in ____.
Secondary spermatocytes undergo ____ to generate haploid spermatids.
Secondary spermatocytes undergo meiosis II to generate ____.
____ undergo meiosis II to generate haploid spermatids.
____ undergo maturation to become mature spermatozoa.
Spermatids undergo maturation to become mature ____.
Spermatogenesis results in f____unctional sperm for each spermatogonium.
A sperm consists of a ____.
The ____ of sperm is filled with mitochondria.
The midpiece of sperm is filled with ____.
____ generates the energy for sperm swimming through the female reproductive tract to reach the ovum in the fallopian tubes.
Each sperm head is covered by a cap known as ____.