High school Biology assist » cabinet Biology » Cell department » Meiosis » expertise Crossing over
Explanation:

During prophase ns homologous chromosomes will certainly line up through one another, forming tetrads. During this lining up, DNA sequences deserve to be exchanged in between the homologous chromosomes. This kind of genetic recombination is dubbed crossing over, and enables the daughter cell of meiosis to be genetically unique from one another.

You are watching: What is the process in which homologous chromosomes wrap around each other and exchange dna?

Crossing over can only occur between homologous chromosomes. Cells end up being haploid after meiosis I, and can no longer perform cross over.


Explanation:

Crossing end is a process that happens between homologous chromosomes in order come increase hereditary diversity. Throughout crossing over, component of one chromosome is exchanged with another. The result is a hybrid chromosome v a distinct pattern of hereditary material. Gametes get the ability to be genetically various from their surrounding gametes after ~ crossing end occurs. This enables for genetic diversity, i beg your pardon will assist cells get involved in survival of the fittest and evolution.


Explanation:

When chromatids "cross over," homologous chromosomes profession pieces of hereditary material, causing novel combinations of alleles, though the same genes are still present. Crossing end occurs throughout prophase ns of meiosis before tetrads space aligned along the equator in metaphase I.

By meiosis II, only sister chromatids remain and homologous chromosomes have actually been moved to different cells. Recall the the allude of crossing over is to increase genetic diversity. If crossing over did not happen until sometime during meiosis II, sisters chromatids, which room identical, would certainly be exchanging alleles. Since these chromatids space identical, this swap of material would no actually readjust the alleles the the chromatids.


Report an Error

Example inquiry #4 : expertise Crossing over


What structures exchange hereditary material during crossing over?


Possible Answers:

Egg and sperm chromosomes


Sister chromatids


Nonsister chromatids


Non-homologous chromosomes


Correct answer:

Nonsister chromatids


Explanation:

During crossing over, homologous chromosomes come together in stimulate to type a tetrad. This nearby contact enables the nonsister chromatids indigenous homolgous chromosomes to affix to one another and exchange nucleotide sequences. Words "nonsister" implies that the chromatids have the exact same genes, yet are not exact duplicates of one another, together they come from separate chromosomes.


Report an Error

Example inquiry #5 : understanding Crossing end


Crossover of homologous chromosomes in meiosis occurs during which phase?


Possible Answers:

Prophase II the meiosis


Anaphase i of meiosis


Prophase ns of meiosis


Anaphase II the meiosis


Correct answer:

Prophase ns of meiosis


Explanation:

The crossing over of homologous chromosomes wake up in prophase i of meiosis. Prophase i of meiosis is characterized by the lining up of homologous chromosomes close together to kind a structure known as a tetrad. A tetrad is composed of 4 chromatids.

Anaphase ns is marked by the separation the homologous chromosomes, whereas in anaphase II there is the separation that sister chromatids. In anaphase i sister chromatids are still intact and connected in ~ the centromere. Prophase II is similar to prophase in mitosis in that there is the malfunction of the atom membrane and the formation of spindle fibers in preparation for the separation of sister chromatids.


Report an Error

Example inquiry #6 : understanding Crossing end


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


Possible Answers:

Tetrad


Base Pair


Chromatid


None that these


Mitotic Bond


Correct answer:

Tetrad


Explanation:

The tetrad, i m sorry divides right into non-sister chromatids, exchanges genetic information in order to make the hereditary pool much more variant, and an outcome in combinations of phenotypic properties that have the right to occur external of attached genotypic coding.


Report one Error

Example question #7 : knowledge Crossing over


Chromosomal crossover occurs in which phase of meiosis?


Possible Answers:

Anaphase II


Metaphase I


Prophase II


Prophase I


Anaphase I


Correct answer:

Prophase I


Explanation:

During prophase I, homologous chromosomes pair v each other and 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 brand-new combinations of DNA created during crossover carry out a far-ranging source of genetic variation.


Report an Error

Example question #8 : knowledge Crossing over


Crossing end is a phenomenon that happens throughout Meiosis i in the attempt to produce genetic diversity. Crossing over commonly occurs in between which that the following structures?


Possible Answers:

Tetrads


Sister chromatids


Homologous chromosomes


Chromatin


Correct answer:

Homologous chromosomes


Explanation:

Crossing over occurs when chromosomal homologs exchange information throughout metaphase the Meiosis I. Throughout this stage, homologous chromosomes heat up on the metaphase plate and also exchange genetic information.


Report one Error

Example question #9 : knowledge Crossing end


When in meiosis does crossing over occur?


Possible Answers:

Interphase


Prophase I


Telophase I


Anaphase I


Metaphase I


Correct answer:

Prophase I


Explanation:

Crossing over occurs during prophase I when parts that the homologous chromosomes overlap and switch your genes.


Report one Error
*

watch Tutors
Cherub Certified guardian
SUNY at Binghamton, Bachelors, organic Science. College at Buffalo, current Grad Student, Medicine.
*

view Tutors
Erin Certified guardian
University of southern Florida-Main Campus, Bachelors, Biology, General. Massachusetts institute of Technology, PHD, organic ...

See more: Br A Semicircle Has A Measure That Is Tics Of Circles, Angles In Semicircles And Chords To Tangents


*

see Tutors
Samantha Certified guardian
Allegheny College, Bachelor that Science, Neuroscience. Clarion university of Pennsylvania, master of arts Teaching, at an early stage Chil...

All High institution Biology resources


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

If you"ve discovered an worry with this question, you re welcome let united state know. With the aid of the community we can continue to boost our education resources.


Do no fill in this field
* your Name:
* issue Description:
DMCA complain

your Infringement notification may it is in forwarded come the party that made the content obtainable or to third parties such as ChillingEffects.org.

please follow these actions to record a notice:

you must encompass the following:

Send your complain to our designated certified dealer at:

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