Biology

Biology, 21.07.2019 11:30, whohelpme

Acertain species of plant has four unlinked genetic loci, w, x, y, and z. each genetic locus has one dominant allele and one recessive allele. for a plant with the genotype wwxxyyzz, what is the probability that the plant will produce a gamete with a haploid genotype of wxyz

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Biology, 25.06.2019 17:20, vxdsvsfdds

Tatuo aida investigated the genetic basis of color variation in the medaka (aplocheilus latipes), a small fish that occurs naturally in japan (t. aida. 1921. genetics 6: 554 573). aida found that genes at two loci (b, b and r, r) determine the color of the fish: fish with a dominant allele at both loci (b_r_ are brown, fish with a dominant allele at the b locus only (b_rr) are blue, fish with a dominant allele at the r locus only (bb r_) are red, and fish with recessive alleles at both loci (bb rr) are white. aida crossed a homozygous brown fish with a homozygous white fish. he then bac ccrossed the f1 with the homozygous white parent and obtained 230 brown fish, 220 blue fish, 280 red fish, and 270 white fish. write out the phenotypes and co responding genotypes of the individuals crossed in the described backcross and their progeny.

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Biology, 09.07.2019 08:00, LilFabeOMM5889

In a species of fish, fin shape is controlled by a single gene that has only two alleles. in a generation of 185 fish, the frequency of the recessive allele is 0.25. after six generations, the recessive allele frequency in a population of 230 fish is 0.43. which of the following does this most likely indicate about the dominant and recessive alleles? the dominant allele is more advantageous than the recessive allele because it produces larger populations. the dominant allele will disappear entirely as the recessive allele increases in frequency. the recessive allele is easier to transmit than the dominant allele during reproduction. the recessive allele produces a phenotype that is better able to survive and reproduce than the dominant phenotype.

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Biology, 15.07.2019 13:00, notcollin2416

Suppose two independently assorting genes are involved in the pathway that determines fruit color in squash. these genes interact with each other to produce the squash colors seen in the grocery store. at the first locus, the w allele codes for a dominant white phenotype, whereas the w allele codes for a colored squash. at the second locus, the allele y codes for a dominant yellow phenotype, and the allele y codes for a recessive green phenotype. the phenotypes from the first locus will always mask the phenotype produced by the second locus if the dominant allele (w) is present at the first locus. this masking pattern is known as dominant epistasis.

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Biology, 21.07.2019 07:00, sandyrose935

Acertain species of plant has four unlinked genetic loci, w, x, y, and z. each genetic locus has one dominant allele and one recessive allele. for a plant with the genotype wwxxyyzz, what is the probability that the plant will produce a gamete with a haploid genotype of wxyz

Answers: 1

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Acertain species of plant has four unlinked genetic loci, w, x, y, and z. each genetic locus has one...

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