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Quiz about Horse Coat Colors and Genetics

Horse Coat Colors and Genetics Quiz

This is a quiz about Horse Coat Colors and Horse Color Genetics. Questions are based on material from 'The Horse, 2nd Edition" by Evans, Borton, et al, the Horse Industry Handbook, and certain other sources on genetics.

A multiple-choice quiz by kspirit. Estimated time: 5 mins.

Author
kspirit

Time
5 mins

Type
Multiple Choice

Quiz #
160,034

Updated
Jun 26 23

# Qns
10

Difficulty
Difficult

Avg Score
4 / 10

Plays
3505

Last 3 plays: Guest 109 (8/10), Guest 73 (3/10), Guest 130 (9/10).

One at a Time - Single Page - Timed Game

Question 1 of 10

1. On a perlino horse, what color are the points? Hint

white

black

cream

rust

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Question 2 of 10

2. What is the term for the genetic makeup of a horse? Hint

phenotype

blood

chromosomes

genotype

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Question 3 of 10

3. Which locus controls the gene for roan coloring? Hint

T locus

R locus

E locus

G locus

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Question 4 of 10

4. How many pairs of chromosomes do horses have? Hint

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Question 5 of 10

5. If a horse has the genotype AAEE, AaEe, or AAEe, what color is it? Hint

Bay

Black

Grey

Chestnut

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Question 6 of 10

6. If a horse has the genotype RnRn, it is: Hint

Homozygous

The foal of two roan parents

Probably dead

All of these

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Question 7 of 10

7. If a horse has the genotype Zz, it is what color? Hint

Tobiano

Flaxen mane and tail

Splash White

Silver Dapple

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Question 8 of 10

8. Roan, Dominant White, and Grey are called what: Hint

epistatic modifiers

pinto patterns

lethal genes

dilution genes

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Question 9 of 10

9. Lethal white syndrome causes a foal to be born without a functional ___? Hint

heart

tail

liver

colon

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Question 10 of 10

10. A double dilution of the creme gene can result in what two colors? Hint

palomino and buckskin

cremello and champagne

dun and perlino

cremello and perlino

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Most Recent Scores

Apr 07 2024 : Guest 109: 8/10
Mar 26 2024 : Guest 73: 3/10
Mar 14 2024 : Guest 130: 9/10
Mar 05 2024 : Guest 4: 2/10
Mar 03 2024 : Guest 81: 4/10
Mar 01 2024 : Guest 68: 5/10
Feb 28 2024 : Guest 70: 10/10

Score Distribution

Quiz Answer Key and Fun Facts

1. On a perlino horse, what color are the points?

Answer: rust

Perlinos have rust colored points. The black is diluted to a rust color instead of a cream color.

2. What is the term for the genetic makeup of a horse?

Answer: genotype

The genotype is the genetic makeup (which genes a horse has, and in which forms) and controls the phenotype.

3. Which locus controls the gene for roan coloring?

Answer: R locus

The gene for roan is located on the R locus. T is tobiano spotting, E is for base coat color, and G is grey.

4. How many pairs of chromosomes do horses have?

Answer: 32

That makes 64 in total!

5. If a horse has the genotype AAEE, AaEe, or AAEe, what color is it?

Answer: Bay

The E's cause the horse to have a black base, while the A's restrict the black hair to the points.

6. If a horse has the genotype RnRn, it is:

Answer: All of these

A horse that is RnRn is homozygous for the roan gene, and it will probably die in utero since roan is frequently lethal in its homozygous dominant form. It also had to come from two roan parents, which would be a very risky pairing that most breeders probably would never attempt.

7. If a horse has the genotype Zz, it is what color?

Answer: Silver Dapple

The genes on the Z locus determine whether or not a horse is silver dapple. This gene is rare in most breeds, but very common in Shetlands, Minis, and Icelandic ponies.

8. Roan, Dominant White, and Grey are called what:

Answer: epistatic modifiers

They totally or partially mask the presence of other coat colors.

9. Lethal white syndrome causes a foal to be born without a functional ___?

Answer: colon

The foal will often be carried to full term and appear normal, although mainly white and with blue eyes. The foal cannot survive and will be euthanized as soon as the condition is identified. Both parents need to be carriers of the mutated gene for the foal to inherit the fault, and DNA testing can prevent this happening.

10. A double dilution of the creme gene can result in what two colors?

Answer: cremello and perlino

These two colors are both recognized by the American White Horse association.

Source: Author kspirit

This quiz was reviewed by FunTrivia editor crisw before going online.
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