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Dihybrid Crosses Solutions Library

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29 solutions

Dihybrid Crosses

Q. For the cross in Part B, predict the frequencies of each of the phenotypes in the F1 progeny, and determine the genotype(s) present in each phenoty...

Solved • May 19, 2020

Dihybrid Crosses

Q. For the cross Aabb × aaBb, what is the expected genotype ratio? What is the expected phenotype ratio?

Solved • May 7, 2020

Dihybrid Crosses

Q. In rabbits, the allele of the gene for short hair (S) is dominant over the allele for long hair (s) and the black hair (B) is dominant over brown h...

Solved • Oct 20, 2018

Dihybrid Crosses

Q. Given the parents AABBCc x AabbCc, assume simple dominance for each trait and independent assortment. What proportion of the progeny will be expect...

Solved • Sep 23, 2018

Dihybrid Crosses

Q. Two plants are crossed, resulting in offspring with a 1:1 phenotype ratio for a particular trait. This suggests _____.A. that one parent is heteroz...

Solved • Sep 18, 2018

Dihybrid Crosses

Q. In guineapigs, a cross between black furred and brown furred parenrs gives offspring with 100% black fur. A cross between a long furred and short f...

Solved • Sep 12, 2018

Dihybrid Crosses

Q. In cats, the hair can be either short or long (angora). A cat fancier made the following crosses with results shown below:a. Which phenotype is dom...

Solved • Sep 11, 2018

Dihybrid Crosses

Q. In rabbits, black fur (B) is dominant to brown (b), and spotted coat (S) is dominant to solid coat (s).A. Give the genotypes of the parents if a bl...

Solved • Aug 28, 2018

Dihybrid Crosses

Q. A violet-flowered, long-stemmed hybrid pea plant was crossed with a true-breeding white-flowered, short-stemmed pea plant with the following offspr...

Solved • Aug 22, 2018

Dihybrid Crosses

Q. Flower colour in a plant species is determined by two genes, gene B and gene P. The gene products of these genes are enzymes that convert a white s...

Solved • Aug 3, 2018

Dihybrid Crosses

Q. Among 160 offspring of the F2 from a dihybrid cross of independently assorting loci A and B, how many will have the phenotype AB?A. 15B. 80C. 90D. 160

Solved • Jul 27, 2018

Dihybrid Crosses

Q. Consider the following cross: (P1) A/a ; B/b ; C/c ; D/D ; E/e x (P2) a/a ; b;b ; C/C ; D/d ; E/e(a) What proportion of the progeny will phenotypic...

Solved • Jul 19, 2018

Dihybrid Crosses

Q. Imagine that two unlinked autosomal genes with simple dominance code in goats for size where L is large and l is small, where B is brown and b is w...

Solved • Jul 13, 2018

Dihybrid Crosses

Q. In the garden pea, Mendel studies independent assorting genes and found that purple flowers (P) are dominant over white (p) and axial flowers (A) a...

Solved • Jul 11, 2018

Dihybrid Crosses

Q. If an intercross of dihybrids produces a 12:3:1 offspring phenotypic ratio, then the cross Aabb x AaBb should produce a ________ phenotypic ratio.A...

Solved • Jul 3, 2018

Dihybrid Crosses

Q. in sesame plants, the one-pod condition (P) is dominant to the three-pod condition (p), and normal leaf (L) is dominant to wrinkled leaf (l). Pod t...

Solved • Jun 29, 2018

Dihybrid Crosses

Q. Consider three independent genes with two alleles, denoting the dominant forms of the alleles as A, B, and C, and the recessive forms as a, b, and ...

Solved • Jun 28, 2018

Dihybrid Crosses

Q. In cats, curled ears result from an allele, Cu, that is dominant over an allele cu, for normal ears. Black color results from an independently asso...

Solved • Jun 8, 2018

Dihybrid Crosses

Q. A plant grown from a [round, yellow] seed is crossed with a plant grown from a [wrinkled, yellow] seed. This cross produces four progeny types in t...

Solved • Jun 7, 2018

Dihybrid Crosses

Q. Mendel studied pea plants dihybrid for seed shape (round versus wrinkled) and seed color (yellow versus green). Recall thatthe round allele (R) is ...

Solved • Jun 7, 2018

Dihybrid Crosses

Q. Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and the other has white, terminal flowers; all F1 individuals...

Solved • Dec 1, 2017

Dihybrid Crosses

Q. Hairy noses in gremlins (H) is dominant to hairless noses (h), and beady little eyes (B) are dominant to large, soulful eyes (b). In a cross of HhB...

Solved • Dec 1, 2017

Dihybrid Crosses

Q. Gene S controls the sharpness of spines in a type of cactus. Cactuses with the dominant allele, S, have sharp spines, whereas homozygous recessives...

Solved • Nov 15, 2017

Dihybrid Crosses

Q. In rabbits, the homozygous CC is normal, Cc results in deformed legs, and cc results in very short legs. The genotype BB produces black fur, Bb bro...

Solved • Nov 15, 2017

Dihybrid Crosses

Q. Imagine that the cell in the figure below is from a bird known as a blue-footed booby.a. Is this cell undergoing mitosis, meiosis I, or meiosis II?...

Solved • Oct 20, 2017

Dihybrid Crosses

Q. Purebreeding boa constrictors that are tan colored with a normal color pattern are mated to purebreeding boa contrictors that are orange colored wi...

Solved • Aug 2, 2017

Dihybrid Crosses

Q. Any dihybrid cross should theoretically yield a 3:1 phenotypic ratio. a. True    b. False

Solved • Jul 27, 2017

Dihybrid Crosses

Q. If you cross RrYy and RRyy pea plants, what fraction of the offspring will have round yellow peas? R=round, r=wrinkled, Y=yellow, y=green.  a. 100...

Solved • Jul 27, 2017

Dihybrid Crosses

Q. A dihybrid cross is a mating between two individuals that are each ______________ for ___________ gene (genes).  a. Homozygous, one b. Homozygous...

Solved • Jul 26, 2017