Two chromosomes in a nucleus that carry loci for the same traits in the very same positions on the chromosome yet specify various versions of some traits constitute a pair ofA) homologous chromosomes.B) heterologous chromosomes.C) security chromosomes.D) polyploid chromosomes.E) parallel chromosomes.

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A pair the male human being sex chromosomes is many likeA) a pair that blue jeans.B) a bride and groom.C) a knife, fork, and also spoon.D) identical twins.E) the letter of the alphabet.
Which the the following statements concerning mitosis and meiosis is false?A) Meiosis just occurs in the ovaries and also testes.B) All sexual life cycles involve an alternation the diploid and haploid stages.C) Mitosis to produce daughter cells with fifty percent the number of chromosomes together the parental cell.D) A normal human being zygote has 46 chromosomes.E) A haploid cell has half the chromosomes that a diploid cell.
Which of the adhering to statements is false?A) A typical body cell is dubbed a somatic cell.B) Gametes space haploid cells.C) Somatic cells are diploid.D) Gametes room made through mitosis.E) A zygote is a fertilized egg.
During which stage of meiosis go synapsis and also the development of tetrads occur?A) interphase IB) prophase IC) interphase IID) prophase IIE) metaphase I
Which of the following alternatives correctly describes the habits of a tetrad during anaphase i of meiosis?A) that goes intact to one pole that the splitting cell.B) that splits into two pairs of sister chromatids, and one pair goes to every pole that the dividing cell.C) it splits right into two bag of homologous, nonsister chromatids, and one pair goes to each pole that the separating cell.D) that splits into 4 chromosomes, which distribute in arbitrarily pairs to the 2 poles of the dividing cell.E) that splits into 4 chromosomes, which distribute in sister-chromosome bag to the two poles the the separating cell.
Which that the complying with statements about the differences between mitosis and meiosis is false?A) In meiosis 4 daughter cells are produced, whereas in mitosis 2 daughter cells room produced.B) Cells created by mitosis are diploid, conversely, cells developed by meiosis space haploid.C) In mitosis cytokinesis wake up once, whereas in meiosis cytokinesis wake up twice.D) Crossing end is a phenomenon that creates hereditary diversity throughout mitosis.E) Mitosis, yet not meiosis, wake up in somatic cells.
Which of the adhering to statements regarding mitosis and meiosis is false?A) Mitosis offers for growth and tissue repair.B) Meiosis gives for asexual reproduction.C) In mitosis, the chromosomes replicate only when in the coming before interphase.D) In meiosis, the chromosomes replicate only when in the coming before interphase.E) every the events unique to meiosis occur during meiosis I.
Both mitosis and meiosis are preceded byA) prometaphase.B) interphase.C) prophase.D) telophase.E) anaphase.
Independent orientation that chromosomes in ~ metaphase I and random fertilization are many likeA) shuffling cards and also dealing out hands the poker.B) cut up a pie into eight even-sized slices.C) alphabetizing records in a filing cabinet.D) pairing up similar socks ~ washing her clothes.E) stringing beads top top a string to make a necklace.
Independent orientation that chromosomes in ~ metaphase I results in rise in the number ofA) gametes.B) homologous chromosomes.C) feasible combinations the characteristics.D) sex chromosomes.E) points of crossing over.
Which of the following statements concerning genetic diversity is false?A) hereditary diversity is intensified by random fertilization.B) genetic diversity is amplified by independent orientation of chromosomes in ~ metaphase I.C) genetic diversity is intensified by mitosis that somatic cells.D) hereditary diversity is amplified by cross over during prophase ns of meiosis.E) hereditary diversity is intensified by random mutations of the DNA.
KaryotypingA) shows chromosomes as they appear in metaphase that meiosis II.B) can reveal alterations in chromosome number.C) examines clues of crossing over.D) expose the outcomes of independent orientation that chromosomes during meiosis I.E) expose the existence of cancerous genes.
A karyotype is most likeA) a map mirroring the concealed location of buried treasure.B) a movie showing the stages of the reproductive bicycle of a beetle.C) a necklace developed by stringing beads ~ above a string.D) photographs the every couple at a high school prom.E) the answer key to a multiple-choice exam.
Which the the following statements regarding Down syndrome is false?A) Trisomy 21 typically leads to down syndrome.B) A human embryo with an abnormal variety of chromosomes is normally spontaneously aborted.C) down syndrome is the most common serious bear defect in the joined States.D) civilization with down syndrome usually have actually a life expectations much shorter than normal.E) Women through Down syndrome cannot reproduce.
Nondisjunction occurs whenA) a part of a chromosome division off and also is lost.B) chromosomes replicate too many times.C) 2 chromosomes fuse right into one.D) members the a chromosome pair fail come separate.E) whole pair that chromosomes is lost during meiosis I.
Which of the complying with statements around nondisjunction is false?A) Nondisjunction in meiosis can impact autosomes and also sex chromosomes.B) In mammals, extra duplicates of the Y chromosome are frequently inactivated.C) The absence of a Y chromosome outcomes in "femaleness."D) In general, a solitary Y chromosome is enough to create "maleness."E) Women with a solitary X chromosome have Turner syndrome and are sterile.
Which the the following species of organisms frequently demonstrates polyploidy?A) mammalsB) reptilesC) flowering plantsD) amphibiansE) fish
How many generations walk it take it to construct a brand-new plant types by nondisjunction?A) oneB) twoC) tenD) twentyE) fifty
Which that the following variations the the sentence "Where is the cat" is most like a chromosomal deletion?A) where is cat?B) where is the the cat?C) whereby the is cat?D) wherein is cat the the cat?E) whereby is is is is the cat?
If a chromosome fragment division off and then reattaches to the original chromosome, but in the reverse direction, the result chromosomal abnormality is dubbed a(n)A) deletion.B) inversion.C) translocation.D) nondisjunction.E) reciprocal translocation.

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Cancer is not typically inherited becauseA) the chromosomal transforms in cancer are usually confined to somatic cells.B) world with cancer generally die prior to reproducing.C) cancer typically causes disruptions that meiosis.D) the causes of cancer are not typically genetic.E) the cancer cells usually interfere v the capability to create gametes.
Mr. And Mrs. Smith have three boy in elementary school. Two of their youngsters are advancing normally, yet their critical son, Charles, has been lot slower 보다 his brother at arising speech and language skills. His parental are came to that he has a finding out disability and also decide to inspection further. Because some learning disabilities have the right to be genetically based, your pediatrician recommends a chromosomal analysis. The results present that Charles has actually a trisomy the the sex chromosomes, diagnosed together XYY, which is resulted in by nondisjunction in the development of the father"s sperm. The nondisjunction led to an extra copy the the Y chromosome. The extra copy was passed on come Charles during fertilization. Many often, this chromosomal readjust causes no unexplained physical features or clinical problems, yet those through trisomy of the sex chromosomes do have actually a higher than normal hazard of delays in finding out development.1) throughout which phase of meiosis have to this nondisjunction have occurred?A) anaphase IB) metaphase IC) metaphase IID) anaphase IIE) prophase II
If Charles gets married and also starts a family, which of the following chromosomal abnormalities can be found in his children?A) XYB) XXC) XYYD) XOE) XXY
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