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champagnemarten455Lv1

28 Sep 2019

In race horses, black hair (H) and trotting gait (T) are dominanttraits, and chestnut hair(h) and pacing gaits (t) are recessive.The genes for hair color and gait are on different chromosomes. Usethe punnett square to determine the possible offspring from a crossbetween 2 heterozygous black trotters.

A. what are the genotypes of the parents?
B. list the possible allele combinations of each parent
mommy horse=
daddy horse=
C. what are the genotypes of the offspring
D. what are the phenotypes

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Related questions

In horses, black color(B) dominates chestnut color(b). The trotting gait(T) dominates the pacing gait (t). A cross is made between a horse homozygous for black color and the pacing gait and a horse homozygous for chestnut color and the trotting gait.

a.List the probable genotype and phenotype of offspring resulting from such a cross.

b. a cross is made between two horses, both of who are heterozygous black trotter.

- Give a genotype of each parent horse. _________ ___________

- Determine all the possible kinds of gametes each parent can produce

_________ ___________ _________ _________

_________ __________ _________ __________

c. Construct a Punnett square and show all the possible gene combinations that results.

d. What is the expected phenotype ration of the offspring?

ivorycicada998

A chesnut coat color of horses is due to a receissive gene, while the dominant allele results in black. The pacing gait is due to a recessive gene, whereas the dominant allele results in the trotting gait. show the od offspings tha could result from corss of balck trotter male heterozyhous , for both genes, wiht a chestnut pacer female.

Gnotype for balck?

male genotypes? male possble gemets?

female genotypes and possible gements?

gentypic and phynotipic ratio ?

% of offsrings that will exivit both domiant tarits?

% of offspings that will exibit chestnut traits?

what are the chances of having a chestnut horse that paces ?

erinturtle48

In need of assistance. Please help answer the following.

1) Pure-breeding yellow guinea pigs crossedwith pure-breeding white guinea pigs produce only cream-coloredoffspring. This pattern indicates incomplete dominance. Rough hairis found to be dominant to smooth hair. Give the F1 and F2genotypic and phenotypic ratios of a cross of a smooth white guineapig with a homozygous rough yellow guinea pig.

2) A breeder of cattle has a herd of white cowsand a roan bull. Hair color in this breed is controlled by anincomplete dominant gene. The two homozygous forms are either redor white, and the heterozygous is roan. Answer the followingquestions please

What color calves are expected and in whatproportion?

Outline a procedure to develop an all-redherd.

3) In horses, black coat color is influenced bythe dominant allele (B), and chestnut coat color is influenced bythe recessive allele (b). Trotting gait is due to a dominant gene(T), pacing gait to the recessive allele (t). If a homozygous blacktrotter is crossed with a chestnut pacer:

What will be the appearance of the F1 and F2generations?

Which phenotype will be the most common?

Which genotype will be the most common?

Which of the potential offspring will be certain tobreed true?

4) In garden peas, one pair of alleles controlsthe height of the plant and a second pair of alleles controlsflower color. The allele for tall (D) is dominant to the allele fordwarf (d), and the allele for purple (P) is dominant for the allelefor white (p). A tall purple crossed with a tall purple produces Â¾tall purple and Â¼ tall white. What is the genotype of the parents?

5) Three alleles control the ABO blood types.I^A and I^B are codominant genes, so thecombination of I^AI^B produces the AB bloodtype. The third allele I^ois recessive to the other twoalleles. Indicate which of these parents could produce the givenchild and submit your response to the instructor.

A X AB produce B child.

A X O produce A child.

A X B produce O child.

A X AB produce O child.

A X AB produce B child.

B X B produce O child.

AB X AB produce A child.