Download 2015 JUNIOR GENETICS EASY 4455 (easy) HIH1040-1/ES94

2015 JUNIOR GENETICS
EASY
4455 (easy)
Q: What color is recessive to black and bay?
A: Chestnut
HIH1040-1/ES94-95
4456 (easy)
HIH1060-1/HS19/TH458-9/ES90
Q: If a gene has the ability to mask the genetic makeup of the other gene in the pair, it is said to be what?
A: Dominant
4457 (easy)
Q: How many pairs of chromosomes do horses have?
A: 32 pairs
HIH1060-1
4458 (easy)
Q: How are characteristics passed from parents to offspring?
A: By genes
(also accept chromosomes)
HIH1020-1
4459 (easy)
HIH1040-1
Q: If a chestnut is mated to a chestnut, what color or colors can be produced?
A: Only chestnut
(additional info -- chestnut is recessive to black)
4460 (easy)
HIH1020-1
Q: What is the dense center of a cell that contains the genetic material?
A: Nucleus
4461 (easy)
TH447/HIH1060-1
Q: 2 part question: How many pairs of chromosomes are there in a horse & are these pairs always identical in
nature?
A: 32 pairs; not always identical
4462 (easy)
HIH1060-1/HS19/TH458-9/ES90
Q: If a gene cannot mask the genetic makeup of the other gene in a pair, it is said to be what?
A: Recessive
4463 (easy)
HIH1020-1
Q: How many chromosomes does the sperm of a stallion or an egg of a mare contain?
A: 32
4464 (easy)
Q: What does genotype mean?
A: Genetic make up
TH458/HS20-21
4465 (easy)
Q: What does phenotype mean?
A: Outward appearance
TH458/HS20
4466 (easy)
HIH1040-3
Q: Are roan horses heterozygous or homozygous?
A: Heterozygous
(additional info -- like with white horses, homozygous roan horses die in utero)
4467 (easy)
HIH1020-1
Q: What is the study of how characteristics are passed from parents to offspring?
A: Genetics
4468 (easy)
Q: What are the units of inheritance?
A: Genes
HIH1020-1
4469 (easy)
Q: What do we need to be able to see chromosomes?
A: Microscope
HIH1060-1
4470 (easy)
HIH1020-2
Q: What is the term used to describe the condition when a pair of genes are identical?
A: Homozygous
4471 (easy)
Q: What is the sex genotype for a mare?
A: XX
HIH1060-1
4472 (easy)
Q: If paired genes are not identical, they are called what?
A: Heterozygous
HIH1020-2
4473 (easy)
HIH1060-1/TH61
Q: How many chromosomes are responsible for the sex of a foal?
A: Two (one pair)
4474
(easy)
Q: What is the sex genotype of a stallion?
A: XY
HIH1060-1
4475 (easy)
HIH1060-4
Q: What do you call an abnormal condition that an animal possesses at birth?
A: Congenital
4476 (easy)
Q: Explain congenital.
A: An abnormal condition that an animal possesses at birth
HIH1060-4
4477 (easy)
HIH1060-1
Q: In the inheritance of sex in the horse, what are the chances for the foal to be male?
A: 50 - 50
4478 (easy)
TH459/HS19
Q: A gene that does not show up when it's paired with a dominant gene is said to be what?
A: Recessive
4479 (easy)
HS19/TH458
Q: Which of the following is the dominant coat color – black or chestnut?
A: Black
4480 (easy)
TH482/HIH1040-1
Q: Which color can cover up or mask colored areas of a horse?
A: White
4481 (easy)
Q: What is the general term for the X & Y chromosomes?
A: Sex chromosomes
HIH1060-1
4482 (easy)
Q: What color foal will a homozygous gray produce?
A: Gray - no matter what color the other parent is
HIH1040-3
JUNIOR BONUS
4573 (junior bonus)
HIH1020-1
Q: What 2 factors determine how well a horse will succeed in a particular discipline such as horse racing?
A: Heredity & environment (nutrition, exercise, training)
4574 (junior bonus)
HIH1020-1
Q: Name 3 things—other than genetic makeup—that may affect a horse's potential.
A: Care, feeding, training, injuries
4575 (junior bonus)
HIH1090
Q: Name 3 things that should be considered when selecting breeding stock.
A: Conformation, breeding/pedigree, disposition, size, individual performance records, progeny records