Question

U ! 2 0.06 0.125 0.06 0.125 0.25 0.125 0.06 96 3:31 H Linked 7.56% Long tails, Black cout, 18,57 0.06 gene (16.5% Long tails, tancoat + 13. In tomatoes, dwarf (d) is recessive to tall (D) and opaque leaves (op) are recessive to green leaves (Op). The loci that determine height and leaf color are linked and law recomb. separated by a distance of 7 map units. For the following cross, what are the -7% 16 offspring linked genes phenotypes and proportions of progeny produced? b opad op D d o op dop d op 12* 2 72 72 dolarline how to los op D J opop ta DdOpop, Ddopop, d Dddd dodidd op Ooop opop op Opent opop do dihybrid cress dd Opop, doopop Vzx YxV2 3 (trihybrid) 64 664 offspring b/c 421 14. You perform a trihybrid cross: You cross true-breeding purple-flowered, round, yello peas (PPRRYY) with true-breeding white-flowered, wrinkled, green peas (pprryy). Y then cross the resulting F1 offspring together to generate an F2 generation. What is probability of an F2 plant having white flowers and producing round, yellow peas? RP PP F: PR RI

please answer 13 in detail and drawings of small punnet squares. This question was already posted on Chegg multiple times, but they do not draw out the punnet squares or calculations.

Answer 1

Given that distance between the gene is 7 map unit. It means that the maximum proportion of recombinants will be 0.07 or 7%.

Out of 0.07 proportion, half will be one type of recombinants and half will be another type of recombinant.

Since allele D and Op are present on the same chromosome and allele d and op are present on the same chromosome. So they will remain together in the next generation.

Cross-over during the gamete formation results in a new combination of alleles. In some of the gamete, D allele will present with op and d allele will present with Op as shown in the cross. 0.035 proportion of gametes has D and op allele and 0.035 proportion of gamete will have d and Op alleles on the same chromosomes.

Tall and green leaves D. Op dop Crossed with d d op op Short and opaque leaves Proportion D d Gametes op d op 0.465 op 0.465 op 0.035 Op 0.035 D d DOP dop dop Dop dop DdOpop(0.465) ddopop(0.465) Ddopop(0.035) ddOpop(0.035) Tall and green Short and Tall and opaque Short and leaves opaque leaves leaves green leaves

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