ANSC 1401 GENERAL ANIMAL SCIENCE FINAL EXAM COMPLETE PREPARATION GUIDE WITH BREEDING, NUTRITION, AND PHYSIOLOGY REVIEW

ANSC 1401 GENERAL ANIMAL SCIENCE FINAL
EXAM COMPLETE PREPARATION GUIDE WITH
BREEDING, NUTRITION, AND PHYSIOLOGY
REVIEW

◉ Gene.
Answer: Small section of DNA that codes for a specific purpose.


◉ Genome.
Answer: Sum of genetic material of an animal.


◉ Trait.
Answer: Observable characteristics


◉ Allele.
Answer: you receive one of these from each parent which can make a
gene have various forms of genotypes and phenotypes.


◉ Mitosis.
Answer: somatic cell division

,◉ Meiosis.
Answer: Development of germ cells, aka gametogenesis


◉ Codominance.
Answer: when different alleles are expressed in a phenotype at the
same time


◉ Incomplete dominance.
Answer: when no dominant allele in expressed in a phenotype,
rather an intermediate expression is observed.


◉ Mutation.
Answer: chemical composition changes of a gene which alter DNA


◉ Selection.
Answer: allowing some animals to reproduce more than other
animals


◉ An animal with matching alleles at a given loci is homozygous.
Answer: True


◉ An animal with different alleles at a given loci is heterozygous..

, Answer: True


◉ Dominant alleles are expressed over recessive alleles..
Answer: True


◉ An animal with a heterozygous genotype at a given loci with
express the recessive allele in the phenotype.
Answer: False


◉ Epistasis is the interaction among genes at a different loci.
Answer: True


◉ Assuming normal dominance of the E and A loci where
heterozygosity results in the dominant phenotype:
Black horse: EE
Red horse: ee
AA: black points
aa: no points
What is the genotype.
Answer: EEAA, EEAa, EeAA
EeAa, EEaa, Eeaa