Results for: Oocytes

In Health

What is the difference between an oocyte and a zygote?

Zygote is the cell resulting from the union of an ovum and a spermatozoon. Oocyte is an immature female germ cell that gives rise to an ovum after two meiotic divisions.
In Health

How many chromosomes does the primary oocyte have?

92 In women, gametogenesis begins in fetal life, but is arrested in prophase of meiosis I for years until just before ovulation. This arrested oocyte is called the "primary ( Full Answer )
In Human Anatomy and Physiology

Where does fertilization of a oocyte usually occur?

Fertilization of an ovulated oocyte must occur within the 24 hour period after ovulation from the ovary by a sperm cell deposited via ejaculation from the male.. This occurs o ( Full Answer )
In Human Anatomy and Physiology

Why must the chromosome number be halved in sperm cells and secondary oocytes?

it is halved so that when the sperm joins with the egg (which is also halved) it will produce one cell with the regular amount of chromosomes, instead of twice as many as it s ( Full Answer )
In Uncategorized

Sperm and oocytes are?

Both are types of cells. The sperm cell carries the male's genetic contribution. The oocyte is the cell that carries the female's contribution. When the sperm cell meets the o ( Full Answer )
In Human Anatomy and Physiology

True or False Explain A chromosome in a primary human oocyte may synapse with any other chromosome in the same cell?

Synapse occurs specifically between homologous pairs. Homologous chromosomes are non-identical chromosomes that can pair (synapse) during meiosis. Except for the sex chromo ( Full Answer )
In Biology

How does an oocyte enter the oviduct?

At ovulation, the egg is released into the abdominal cavity near the funnel-like opening of the oviduct. Cilia on the epithelial lining of the duct help collect the egg by dra ( Full Answer )
In Reproductive System

What is the difference between an oocyte and a follicle?

The egg (oocyte) develops within a follicle in the ovary. This follicle ( derived from the Latin word for nest) is a thin-walled structure containing fluid, with the egg attac ( Full Answer )
In Pregnancy

What activity during oocyte activation prevents penetration by additional sperm?

If the man wears a condom so no sperms ever reach the egg is one way. The other way is to be on the birth control pill or other contraceptive hormonal methods that prevents th ( Full Answer )
In Sexual Health and Education

Is it possible Assume that a woman could be an on demand ovulator like a rabbit in which copulation stimulates the release of LH and an oocyte was ovulated and fertilized on day 26 of her 28 day cycle?

No, because the hormonal production of the ovary has ceased; the endometrium is beyond the receptive stage and is ready to slough off in menses (aka the menstrual cycle). This ( Full Answer )
In Genetics

How many eggs cells are produced from one primary oocyte?

One primary oocyte divides by meiosis and produces one polar body and one secondary oocyte. The polar body goes on to produce two more polar bodies, and the secondary oocyte d ( Full Answer )
In Biology

Are secondary oocytes diploid cells?

secondary oocytes are haploid cells carrying 23 chromosomes. After fertilization by sperm a Zygote is formed with a diploid number 46.
In Reproductive System

Difference between primary and secondary oocyte?

Any oogonia that has arrested itself in meiosis I prophase-dipoteneon the onset of OMI (oocye maturation inhibition) hormone in the3rd month of pregnancy and there after is a ( Full Answer )
In Reproductive System

How does the oocyte enter the uterine tubes?

At the time of ovulation, the fimbriae increase their activity and create currents in the peritoneal fluid that help propel the oocyte into the Fallopian tube.
In Genetics

When does an oocyte become a haploid cell?

When one of the daughters of the primary oocyte, aka one of the seconday oocytes goes through the second meiotic division. One of those daughter cells forms a haploid ootid th ( Full Answer )
In Genetics

Why the oocyte divides into two unequal size cells?

The oocyte divides into two unequal sizes so as to retain most of the cytoplasm in a single oocyte cell (ovum) that is important for further reproductive process.
In Health

How does the sperm penetrate the oocyte?

Sperm has enzymes that breakdown the outer coat of the oocyte. Ittakes many sperm with all their enzymes working together toaccomplish this.
In Uncategorized

Can you see a human oocyte with the naked eye?

Yes: in the latter stages of its differentiation an oocyte becomes larger than 100-150μm in diameter, becoming visible to the naked eye.
In Uncategorized

Do Oocytes only complete meiosis II if they are fertilized?

The answer is yes. Female infants are born with primary oocytes that are stalled in prophase I until puberty. At the onset of puberty, the ovaries begin oogenesis. During ooge ( Full Answer )
In Uncategorized

What kind of gametocype is 'oocyte'?

"Oo" is the prefix for "egg" and "cyte" is the suffix for "cell," so an "oocyte" is an egg cell. It is the fundamental female sex cell, complementary to the male sperm.
In Uncategorized

Prenatal maturation of oocyte?

During the fetal period, each primary oocyte achieves a diameter of20 micrometers and is surrounded by a single, Spermatozoa Transportand Maturation.