Quizzes Flashcards
True or False:
Domestic changes wild animals at the genetic level
true
What are commensals?
animals that are domesticated mainly things like pets
What are the four F’s of domestication?
- Friendly
- Feedable
- Fecundity
- Families
What does fecundity mean?
another way to say how fast they grow or mature to reproductive age
What is a trait? And give an example.
a specific characteristic of an individual that is qualitative or quantitative an example is hair color
What is a phenotype? And give an example.
a phenotype is a set of observable characteristic it is the trait that you can see and example is red hair
The physical address of a gene is the ________.
locus
Why is genetic diversity important to biodiversity?
genetic diversity will increase the survivability and adaptability for that population more will live and reproduce and contribute to overall biodiversity
Genetic diversity is higher in those population exhibiting increased ______________.
heterozygosity
Organism with two complete sets of homologous chromosomes are said to be ________________.
diploid
What is the largest constriction site of a chromosomes?
centromere
When the centromere is located exactly at midpoint the chromosome shape is considered to be……
metacentric
During what phase of the cell cycle is a karyotype generated?
metaphase when they are all lined up in the middle
True or False:
During mitosis the diploid chromosome number is halved (2n –> n)
false
Why can’t a mule reproduce?
because they have 63 diploid cells when they divide in meiosis they have 31.5 and can’t match up a half chromsome
Original gene sequence: A B C D E F
New gene sequence: A D C B E F
What caused this gene sequence?
an inversion
Curly calf syndrome is a result of what chromosome aberration?
deletion
The tobiano spotting on horses is cause by what chromosome aberration?
inversion
What chromosome shape is most likely to form a Robertsonian Translocation (centric fusion)
acrocentric
A mammal with the genotype “XO” is biologically a _____________, and will have _____________ syndrome.
-female
-turners
A mammal with the genotype “XXY” is biologically a _____________, and will have _____________ syndrome.
-male
-Klinefelter
The biological basis of heredity is __________.
DNA
DNA contains alot of _____________, but no ____________.
phosphorus, sulfur
If a DNA sequence contains 20% adenine, what percentage of the DNA sequence is guanine?
30%
