Concept explainers
a. What is the distance between the gene and the centromere?
b. Diagram the meiosis producing the tetrad class
c. Diagram the meiosis producing the tetrad class
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- I'm stuck on A1. Question what notation would you use to characterize patient a's karyotype? I put 45, xx/xy +13 but I'm not surearrow_forwardI Review Lesch-Nyhan syndrome (OMIM 300322) is a rare X-linked recessive disorder that produces severe mental retardation, spastic cerebral palsy, and self- mutilation. Part A What is the probability that the first son of a woman whose brother has Lesch-Nyhan syndrome will be affected? Express your answer as a fraction (example 1/16). Submit Request Answer Part B If the first son of the woman described in (a) is affected, what is the probability that her second son is affected? Express your answer as a fraction (example 1/16). Submit Request Answerarrow_forwardAaBbCcDdEe AaBbCcDc AaBbCcDdEe AaBb( AaBbccDdEe AaBbCcDdEe AaBbCcDd. x, x A I v Av Normal No Spacing Heading 1 Heading 2 Title Subtitle Subtle Emp In tomatoes, red fruit (R) is dominant over yellow fruit (r) and tall plant (T) is dominant over short plant (t). A plant that is heterozygous for both traits is crossed with a plant that is homozygous recessive for both traits. What is the genotype and phenotype of the offspring? Saguaro cacti are very tall cylindrical plants that usually have two L-shaped arms, one on each side. Suppose you live in southern Arizona where the Saguaro cactus is common, and you happen to have one growing in your yard. Your Saguaro has two arms, but one is longer than the other. Now, assume that arm length in these cacti i controlled by a single gene with arms of the same length (A) being dominant to arms of different lengths (a). What is the genotype of your cactus? Could one of the parents of your cactus have had a phenotype with arms actusarrow_forward
- How many different genotypes will be expected from a selfing of an individual with the gènotype A/a; B/b; D/D; e/e; F/f? O64 O 16 27arrow_forwardKARYOTYPE #8 ZWK99032 KEY 14 15 17 19 21 22 Y Is this karyotype male or female? What kind of error (if any). Name of syndrome 9. 3. 20 OXEO gertearrow_forwardAn individual has the following genotype. Gene loci (A) and (B) are 15 m.u. apart. What are the correct frequencies of some of the gametes that car be made by this individual? Bl a O A. Ab = 7.5%; AB = 42.5% B. ab = 25%; aB = 50% O C. AB = 7.5%; aB = 42.5% O D. aB = 15%; Ab = F0% E. aB = 70%; Ab = 15% Reset Selection OMark for Review What's This?arrow_forward
- 5 & :56M ******* 24 DIHYBRID CROSSES DRV 0 Stv T alı A @ zladenA 9160p2-id2 bns obidalbaneoviene da II\ MOD YR 21 $59A ... Create a dihybrid cross and determine the expected phenotypic percentages of the offspring of two corn plants both of which are heterozygous for colour and texture (RrTt X RrTt). Don't forget to include clear let statements, and follow the all six steps taught on solving genetics problems. insig moni nellog: bna. zoomarrow_forwardd/1n5NtidRwTwUzcDkDPi5Z9P SHPZ9IA-XH-pfftLbhNc/edit 1) @ Is Add-ons Help Last edit was 15 minutes ago | Calibri в I UA 12 + 3I | II 6 1 I 7. Construct a Punnett square for a cross between two heterozygous pea plants with violet flower color. a. What genotypes would you expect in the offspring? b. What percentage or ratio of each genotype would you expect in the offspring? !!!arrow_forwardNeurospora of genotype a + c are crossed withNeurospora of genotype + b +. (Here, + is shorthandfor the wild-type allele.) The following tetrads areobtained (note that the genotype of the four sporepairs in an ascus are listed, rather than listing alleight spores):a + c a b c + + c + b c a b + a + ca + c a b c a + c a b c a b + a b c+ b + + + + + b + + + + + + c + + ++ b + + + + a b + a + + + + c + b +137 141 26 25 2 3a. In how many cells has meiosis occurred to yieldthese data?b. Give the best genetic map to explain these results.Indicate all relevant genetic distances, both betweengenes and between each gene and the centromere.c. Diagram a meiosis that could give rise to oneof the three tetrads in the class at the far right inthe listarrow_forward
- A A EE v E v E E 12 Aa v AaBbCcDdE AaBb AaBbCcDdEe AaBbCcDdEe AaBbCcD ab x, х, х* x A evAv Normal No Spacing Heading 1 Heading 2 Title Styles Pane Dicta Q4. Assume eye colour in humans is controlled by a pair of alleles of a gene where the allele giving brown eyes is dominant to the allele giving blue eyes. Both parents of a blue-eyed man, John, were brown-eyed. He married a brown-eyed woman, Sara, whose father had brown eyes and mother blue eyes. Sara had a blue-eyed sister. John and Sara had a brown-eyed child. 1) Fill in the boxes and circles on the family tree below to show the genotype of each individual. John Sara Q5. When Mendel crossed a large number of tall pea plants with short pea plants all E1 plantsarrow_forwardTrivla Game Show _Make Your Own Tri ngston.schoology.com/common-assessment-delivery/start/4789189591?action=onresume&submissionld=463322566 Dillon WF g Aa v Done In guinea pigs, black hair (B) is dominant to white hair (b) and rough hair (R) is dominant to smooth hair (r). What are all the possible genotypes of a guinea pig that has black, rough hair? (Select all that apply.) O BBRR BBRr BBrr BBRR BbRr O bbRR O bbRr O bbrr O Black O White O Rough OSmooth O Rough O Smootharrow_forwardIs cystic fibrosis a genotypic or phenotypic change? Explain your reasoning. Edit View Insert Format Tools Table, 12pt v Paragraph BIU A 2 T?くarrow_forward