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How does a germ cell become a gamete?

So I know that the oocyte and the sperm are the female andmale"germ cell", and that the germ cells give rise to gametes,whichfuse at fertilization. What's the process of a germ cellbecomingactual "gametes"? (especially in females) Is it a matter ofjustmitotic division? or is there a more regulated andcomplicatedpathway behind it?

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Nelly Stracke
Nelly StrackeLv2
28 Sep 2019

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Related questions

In what phases is the genetic material in the cell correctly referred to as chromatids?

A.

metaphase and telophase

B.

anaphase and metaphase

C.

interphase and telophase

D.

interphase and prophase

E.

metaphase and prophase

Consider two traits for an organism, determined by two genes, each of which is governed by at least two alleles. In the case of a dihybrid individual, the gametes formed will be of either the parental type or the recombinant type. Recombinant type gametes are formed because of

A.

the principle of dihybrids.

B.

multiple alleles.

C.

heterozygosity.

D.

incomplete dominance.

E.

independent assortment.

An allele is

A.

an alternate form of a gene.

B.

always recessive.

C.

the main factor determining a trait.

D.

always one of a pair.

E.

the dominant form of a gene.

After the DNA is replicated, and it condenses in prophase, two identical rods of DNA are seen. These are

A.

spindle fibers.

B.

kinetochores.

C.

chromatids.

D.

chromatin.

E.

centromeres.

Special cells found in the gonads that give rise to gametes upon division are called

A.

egg cells.

B.

somatic cells.

C.

germ cells.

D.

stem cells.

E.

basal cells.

1.

Skin cancers typically develop in the

A) subcutaneous layer.
B) lower layers of the epidermis.
C) lower layers of the dermis.
D) upper layers of the epidermis.
E) upper layers of the dermis.

2.

The genetic makeup of a particular trait in an individual isits

A) genotype.
B) filial.
C) heterozygosity.
D) phenotype.
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3.

Sickle cell anemia is an example of what type ofinheritance?

A) recessive dominance
B) multiple alleles
C) complete dominance
D) incomplete dominance
E) codominance

4.

The segregation principle states that in sexually reproducingdiploid organisms the two copies of each gene

A) will both wind up in either the sperm or egg.
B) segregate from each other during meiosis.
C) move together as a unit during meiosis.
D) separate from each other during mitosis.
E) must always be the same allele.

5.

If you view a cell in which the genetic material is beginning tobe visible as separate bodies, and the nucleus has disappeared fromview, you may surmise that the cells is in

A) metaphase.
B) interphase.
C) anaphase.
D) prophase.
E) telophase.

6.

Tall corn plants (T) are dominant to dwarf plants (tt). Solidgreen leaves (G) are dominant to leaves with a white tip (gg). Across between two corn plants yielded the following phenotypes: 51tall plants with a white tip on their leaves; 43 dwarf plants withsolid leaves; 48 dwarf plants with white tips on their leaves; 45tall plants with solid leaves. What are the genotypes of theparents that produced these plants?

A) TtGg x TtGg
B) TtGg x Ttgg
C) ttGG x TTgg
D) TtGg x ttgg
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7.

What structure holes the sister chromatids to the spindlefibers?

A) cyclin
B) centromere
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D) kinetochore
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8.

At the end of metaphase I, _______________ separate.

A) centrioles
B) haploid chromatids
C) homologous chromosomes
D) germ cells
E) sister chromatids

9.

Special cells found in the gonads that give rise to gametes upondivision are called

A) stem cells.
B) basal cells.
C) germ cells.
D) somatic cells.
E) egg cells.

10.

Consider two traits for an organism, determined by two genes,each of which is governed by at least two alleles. In the case of adihybrid individual, the gametes formed will be of either theparental type or the recombinant type. Recombinant type gametes areformed because of

A) multiple alleles.
B) heterozygosity.
C) independent assortment.
D) the principle of dihybrids.
E) incomplete dominance.

11.

Cytokinesis in plant cells differs from cytokinesis in animalcells because

A) plant cells have a rigid cell wall.
B) there is no difference.
C) in plant cells, the cell plate must also divide into twoparts.
D) the contractile protein, actin, is important only in plantcells.
E) a contractile ring forms only in plant cells.

12.

In what phases is the genetic material in the cell correctlyreferred to as chromatids?

A) metaphase and telophase
B) metaphase and prophase
C) interphase and prophase
D) anaphase and metaphase
E) interphase and telophase

13.

If an organism

What is the biological mechanism behind the variation withinsexually reproducing species? Obviously, the children arecombinations, to differing degrees, of their parents. But how doesthe variation originate in the parents to begin with?

I'm not referring to evolution or mutations rather I have inmind things like facial structure and personality in humans, or furcoloring in dogs. I just thought I vaguely remembered there wassome kind of driver of variation... For example, does the parentproduce a variety of germ cells that purposely differ from theparent's geneome?

I just think I'm missing something here.

(I'm familiar with DNA and genetics having taken a biology classin college and remembering much of it, I just can't seem to put myfinger on this point...)

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