High institution Biology assist » cell Biology » Cell division » Meiosis » expertise Crossing end
Explanation:

During prophase i homologous chromosomes will certainly line up through one another, forming tetrads. Throughout this lining up, DNA sequences have the right to be exchanged between the homologous chromosomes. This kind of hereditary recombination is dubbed crossing over, and enables the daughter cells of meiosis to be genetically unique from one another.

You are watching: When does synapsis and crossing over occur in meiosis

Crossing over deserve to only occur in between homologous chromosomes. Cells come to be haploid ~ meiosis I, and also can no much longer perform cross over.


Explanation:

Crossing end is a procedure that happens in between homologous chromosomes in order come increase genetic diversity. During crossing over, part of one chromosome is exchanged with another. The result is a hybrid chromosome through a distinctive pattern of genetic material. Gametes acquire the capacity to be genetically different from their neighboring gametes after crossing end occurs. This permits for genetic diversity, i beg your pardon will aid cells get involved in survive of the fittest and evolution.


Explanation:

When chromatids \"cross over,\" homologous chromosomes trade pieces of hereditary material, resulting in novel combinations of alleles, though the same genes are still present. Crossing over occurs throughout prophase i of meiosis prior to tetrads space aligned along the equator in metaphase I.

By meiosis II, just sister chromatids remain and homologous chromosomes have actually been moved to separate cells. Recall the the allude of crossing over is come increase genetic diversity. If crossing end did not take place until sometime throughout meiosis II, sister chromatids, which space identical, would certainly be exchanging alleles. Because these chromatids space identical, this swap of product would not actually change the alleles the the chromatids.


Report one Error

Example question #1 : expertise Crossing end


What structures exchange genetic material throughout crossing over?


Possible Answers:

Non-homologous chromosomes


Nonsister chromatids


Egg and also sperm chromosomes


Sister chromatids


Correct answer:

Nonsister chromatids


Explanation:

During crossing over, homologous chromosomes come together in stimulate to form a tetrad. This near contact enables the nonsister chromatids from homolgous chromosomes to attach to one another and exchange nucleotide sequences. The word \"nonsister\" means that the chromatids have the same genes, but are not exact copies of one another, as they come from different chromosomes.


Report one Error

Example inquiry #1 : understanding Crossing over


Crossover the homologous chromosomes in meiosis occurs throughout which phase?


Possible Answers:

Anaphase II that meiosis


Prophase ns of meiosis


Prophase II the meiosis


Anaphase i of meiosis


Correct answer:

Prophase i of meiosis


Explanation:

The crossing over of homologous chromosomes wake up in prophase ns of meiosis. Prophase i of meiosis is identified by the lining increase of homologous chromosomes close with each other to form a structure well-known as a tetrad. A tetrad is created of four chromatids.

Anaphase i is significant by the separation of homologous chromosomes, whereas in anaphase II over there is the separation that sister chromatids. In anaphase i sister chromatids are still intact and also connected at the centromere. Prophase II is similar to prophase in mitosis in that there is the breakdown of the atom membrane and also the development of spindle fibers in ready for the separation the sister chromatids.


Report one Error

Example inquiry #1 : understanding Crossing end


During cross over, 2 homologous chromosomes pair to type which the the adhering to choices?


Possible Answers:

Mitotic Bond


None the these


Tetrad


Chromatid


Base Pair


Correct answer:

Tetrad


Explanation:

The tetrad, which divides into non-sister chromatids, exchanges genetic information in bespeak to do the hereditary pool much more variant, and an outcome in combine of phenotypic properties that deserve to occur external of linked genotypic coding.


Report an Error

Example question #1 : knowledge Crossing end


Chromosomal crossover occurs in which phase of meiosis?


Possible Answers:

Anaphase I


Metaphase I


Prophase I


Anaphase II


Prophase II


Correct answer:

Prophase I


Explanation:

During prophase I, homologous chromosomes pair v each other and also exchange hereditary material in a process called chromosomal crossover. The exchange wake up in segments over a small region of homology (similarity in sequence, ie., the very same alleles). The new combinations the DNA developed during crossover administer a far-reaching source of genetic variation.


Report one Error

Example question #1 : understanding Crossing end


Crossing over is a phenomenon that happens during Meiosis i in the effort to create genetic diversity. Crossing over frequently occurs in between which that the following structures?


Possible Answers:

Chromatin


Tetrads


Homologous chromosomes


Sister chromatids


Correct answer:

Homologous chromosomes


Explanation:

Crossing over occurs when chromosomal homologs exchange information during metaphase the Meiosis I. During this stage, homologous chromosomes heat up ~ above the metaphase plate and also exchange hereditary information.


Report one Error

Example inquiry #1 : understanding Crossing end


When in meiosis go crossing end occur?


Possible Answers:

Metaphase I


Prophase I


Anaphase I


Telophase I


Interphase


Correct answer:

Prophase I


Explanation:

Crossing end occurs during prophase I as soon as parts the the homologous chromosomes overlap and also switch their genes.

See more: 【Solved】 How Do You Spell Louis Vuitton ? (Correctly) How To Pronounce Louis Vuitton


Report one Error
\"*\"

watch Tutors
Rachel Certified tutor
Oregon State University, Bachelor of Science, health and wellness Promotion and also Education. College of Colorado Denver, Masters, society ...
\"*\"

watch Tutors
Michael Certified guardian
Stony Brook University, Bachelor of Science, Biology, General.
\"*\"

view Tutors
Cherub Certified guardian
SUNY in ~ Binghamton, Bachelors, biological Science. College at Buffalo, present Grad Student, Medicine.

All High school Biology sources


10 Diagnostic tests 247 exercise Tests inquiry of the job Flashcards discover by principle
Popular Subjects
satellite Tutors in san Diego, Algebra Tutors in Philadelphia, Physics Tutors in Seattle, Spanish Tutors in brand-new York City, SSAT Tutors in Houston, Algebra Tutors in Boston, Calculus Tutors in new York City, Algebra Tutors in san Francisco-Bay Area, LSAT Tutors in Seattle, plot Tutors in Houston
Popular courses & Classes
ISEE courses & class in Denver, ACT courses & classes in Seattle, SAT process & great in mountain Francisco-Bay Area, ISEE process & great in Atlanta, ACT process & classes in Houston, SSAT process & classes in Miami, SAT courses & great in Seattle, LSAT process & class in new York City, Spanish courses & great in Phoenix, SSAT process & classes in Phoenix
Popular check Prep
GMAT test Prep in Chicago, ACT check Prep in Houston, MCAT check Prep in Dallas ft Worth, sat Test prep in new York City, ACT test Prep in Seattle, SSAT check Prep in Dallas ft Worth, MCAT test Prep in Phoenix, MCAT check Prep in Chicago, ACT check Prep in Los Angeles, GRE test Prep in Los Angeles
Report an worry with this inquiry

If you\"ve found an worry with this question, please let us know. With the assist of the ar we can proceed to improve our education resources.


Do not fill in this field
* her Name:
* worry Description:
DMCA complaint

her Infringement an alert may be forwarded come the party that made the content available or to third parties such together ChillingEffects.org.

you re welcome follow these measures to paper a notice:

girlfriend must include the following:

Send your complain to ours designated certified dealer at:

Charles Cohn Varsity Tutors llc 101 S. Hanley Rd, Suite 300 St. Louis, MO 63105