B (Translocations take place when a segment that DNA moves from one place in the genome to another. Deletions space a loss of a part of a chromosome. Duplications occur when the genetic information native one sisters chromatid is inserted onto the other chromatid, along with the original copy the the hereditary material, leading to an extra or duplicate ar of DNA. An inversion refers to the changing of direction of a segment o f DNA while it remains in the same location on the chromosome. Monosomy refers to the loss of whole chromosome v nondisjunction during meiosis.)


You are watching: Which refers to the loss of a complete chromosome?

Which describes the lose of a portion of a chromosome?(A) duplication(B) deletion(C) inversion(D) translocation
If a chromosomal segment appears much more than when in the same chromosome, the is termed a(n)(A) deletion (B) inversion(C) translocation(D) duplication
D (Down syndrome, or trisomy 21, is nondisjunction that the 21st chromosome; this leads to an extra copy of the chromosome. Sri du chat syndrome is a deletion the a part of chromosome 5. Turner syndrome is the inheritance the a single X chromosome (XO). Klinefelter syndrome is the inheritance of 2 X chromosomes and one Y chromosome. Poly-X females have much more than two X chromosomes and also no Y chromosome.)
A human with an XO genotype is classified together having(A) under syndrome(B) Klinefelter syndrome(C) a poly-X state(D) Turner syndrome
Which of the adhering to sex-linked illness is identified by the absence of a coagulation factor?(A) hemophilia(B) color-blindness(C) nobody of the answer selections are true(D) Duchenne muscular dystrophy
B (The mom is xBxb and also the dad is xBy. V this mix of genotypes, any kind of son will have actually a 50% chance of inheriting the color-blind allele due to the fact that the father can only give the Y chromosome and also the mom can offer either the regular allele or the color-blind allele)
If a woman is a carrier for the color-blind recessive allele and also her husband has actually normal vision, what space their opportunities that a son will be color-blind?(A) None, because the father is normal(B) 50%, because the mother is just a carrier(C) 100% due to the fact that the mother has the gene(D) 25% because the mommy is a hybrid(E) None because the son will additionally be simply a carrier
C(Given the XB = normal shade vision and also Xb = color blind (recessive), a heterozygous female would certainly be XBXb and also a color-blind male would it is in XbY. Daughters would have a 50% possibility of inheriting normal shade vision, but they will certainly be heterozygous for the trait, the various other 50% will be color-blind. Sons have actually the same 50/50 chance or regular vs. Color-blind. Notification that this is based upon the probability the the X chromosome that they will certainly inherit from your mother since they will certainly not get an X from their father. For daughters that is still the mother"s X chromosome that makes the difference because the X chromosome they would inherit from your father must lug the color-blind allele.)
Color-blindess is inherited as an X-linked recessive trait. A male that is color-blind marries a heterozygous woman. What percent of your total youngsters will be color-blind?(A) 0%(B) 25%(C) 50%(D) 75%(E) 100%
Which describes the lose of a complete chromosome?(A) monosomy(B) translocation(C) inversion(D) deletion
C (If the Y chromosome is present and also produces the hormones linked with maleness, climate the individual will certainly be male. Males can have one or 2 Y chromosomes)
Considering that males deserve to have Klinefelter (XXY) syndrome, XYY, and also normal XY chromosomal combinations, and females deserve to have Turner (XO) syndrome, poly-X (XXX, XXXX), and normal XX combinations, that is obvious that (A) maleness outcomes from the visibility of just one X chromosome(B) maleness results from the absence of 2 or more X chromosomes(C) maleness results from the minimal existence of one Y chromosome(D) femaleness outcomes from the existence of two or more X chromosomes
A (linked genes room ones situated on the exact same chromosome sometimes. Disjunction refers to the separation the homologous chromosomes throughout meiosis ns or sisters chromatids throughout meiosis II. This is the regular process. If it stops working to occur, then it is termed nondisjunction and also extra hereditary information is present. Crossing end is the equal exchange of hereditary information between two non sister chromatids. It results in a reshuffling of parental genotypes. Monosomy describes the loss of an entire chromosome through nondisjunction throughout meiosis.)
When homologous chromosomes fail to separate throughout meiosis, this is termed(A) nondisjunction(B) monosomy(C) connected genes(D) crossover
A (A gene is discovered at a certain location (locus) ~ above a chromosome. The 2 alleles for the gene are found at the very same loci ~ above homologous chromosomes)
The ar of a gene ~ above a chromosome is referred to as (A) a locus(B) one allele(C) a link map(D) a linkage group
A human who has an extra copy that a chromosome is stated to have(A) trisomy(B) monosomy(C) duplication(D) nondisjunction
A (Given the XB = normal color vision and also Xb = color blind (recessive), a color-blind female would be XbXb and a normal man would it is in XBY. Daughters would have normal color vision, however they will be heterozygous because that the trait. Sons have actually a 100% probability that color-blind vision. An alert that this is based on the probability of the X chromosome the they will certainly inherit from their mother because they will not get an X from your father. For daughter the is the father"s X chromosome that renders the difference because the X chromosome they would inherit indigenous their mom must lug the color-blind \allele and the one from their father must carry the normal shade vision allele.)
A common male marries a color-blind woman. What percent of your female youngsters will be color-blind?(A) 0%(B) 25%(C) 50%(D) 75%(E) 100%
Which refers to the enhancement of a repeat segment the a chromosome?(A) translocation(B) inversion(C) duplication(D) deletion
caused by lack of clotting factor; A: lack of clotting element VIII, B: absence of clotting aspect IX; blood either does no clot or clots really slowly, they bleed excessively after external injury, can bleed internally
females have actually 1 X chromosome, generally are quick with webbed neck, high palate, and little jaw, plenty of have congenital heart and also kidney defects, most have ovarian failure and also do not undergo puberty or menstruate there is no hormone therapy, around 1 in 2,000 girls born
about 1 in 650 males born v XXY chromosomes, normally not diagnosed till after age 15; speech and language delays, require aided reproduction in order to dad children, impacted individuals generally receive testosterone supplementation beginning at puberty
more than 1 X chromosome, taller, no other distinctive phenotypes, some have actually delayed motor and also language development, some may have actually menstrual difficulties but most carry out so regularly and also are fertile, children usually have actually normal karyotypes
occur as soon as chromosomes break; deserve to be resulted in by eco-friendly agents (radiation, essential chemicals, or viruses), generally fixed, can occur during meiosis, bring about syndromes in offspring
occurs when a solitary break causes a chromosome to shed an end piece or as soon as two coincided breaks result in the lose of an inner chromosomal segment
a chromosomal segment is recurring in the same chromosome or in a no homologous chromosome, the separation, personal, instance has much more than two alleles for particular traits
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