Genetics exam questions and answers graded
A+
1. Chromosomes are
Chromosomes are inherited in sets and occur as
in- herited in
homologous pairs
and occur as
pairs
2. Homologous
Chromo- somes Chromosomes that have the same sequence of genes, that
have the same structure
1 from mother and 1 from father
3. Diploid (2n) contain 2 copies of each chromosome
4. Haploid (n) having a single set of unpaired chromosomes
5. Autosomes Any chromosome that is not a sex chromosome (pairs 1-22)
6. Sex Chromosomes Chromosomes that determine the sex of an individual
X and Y chromosome
pair #23
7
. 1/
30
, Genetics exam questions and answers graded
A+
In humans, how In humans there are 23 chromosomes in a set (i.e., n = 23).
many chromosomes Humans are diploid (i.e., 2n), so they
are in a set? How have 2 sets of chromosomes, which gives 2 x 23 = 46 total
many chromo- somes chromo- somes in each cell.
in total?
8. Alleles ditterent forms of the same gene
Can be the dominate form (T) or the recessive form
(t) one from mom and one from dad
9. Homozygous having two identical alleles for a trait
TT or tt (one from mother and one from father)
10. Heterozygous An organism that has two ditterent alleles for a trait
Tt
11. Loci Location of a gene on a
chromosome ex: 15q24.1
15- which chromosome #
q- the long arm (p is the short
, Genetics exam questions and answers graded
A+
arm) 24.1- the band #
7
. 1/
30
, Genetics exam questions and answers graded
A+
12. Cell Cycle series of events that cells go through as they grow
and divide G0 Phase
Interphase
G1 (gap 1)
Phase S
(synthesis)
Phase G2 (gap
2) Phase
M (mitosis or meiosis) Phase
13. G0 Phase A nondividing state occupied by cells that have left the cell
cycle, sometimes reversibly.
they're either in a maturation phase or they never divide (like
neu- rons)
14. G1 (gap 1) Phase -cell growth
-synthesis of cell constituents (organelles double)
15. S (synthesis) Phase -DNA replication
A+
1. Chromosomes are
Chromosomes are inherited in sets and occur as
in- herited in
homologous pairs
and occur as
pairs
2. Homologous
Chromo- somes Chromosomes that have the same sequence of genes, that
have the same structure
1 from mother and 1 from father
3. Diploid (2n) contain 2 copies of each chromosome
4. Haploid (n) having a single set of unpaired chromosomes
5. Autosomes Any chromosome that is not a sex chromosome (pairs 1-22)
6. Sex Chromosomes Chromosomes that determine the sex of an individual
X and Y chromosome
pair #23
7
. 1/
30
, Genetics exam questions and answers graded
A+
In humans, how In humans there are 23 chromosomes in a set (i.e., n = 23).
many chromosomes Humans are diploid (i.e., 2n), so they
are in a set? How have 2 sets of chromosomes, which gives 2 x 23 = 46 total
many chromo- somes chromo- somes in each cell.
in total?
8. Alleles ditterent forms of the same gene
Can be the dominate form (T) or the recessive form
(t) one from mom and one from dad
9. Homozygous having two identical alleles for a trait
TT or tt (one from mother and one from father)
10. Heterozygous An organism that has two ditterent alleles for a trait
Tt
11. Loci Location of a gene on a
chromosome ex: 15q24.1
15- which chromosome #
q- the long arm (p is the short
, Genetics exam questions and answers graded
A+
arm) 24.1- the band #
7
. 1/
30
, Genetics exam questions and answers graded
A+
12. Cell Cycle series of events that cells go through as they grow
and divide G0 Phase
Interphase
G1 (gap 1)
Phase S
(synthesis)
Phase G2 (gap
2) Phase
M (mitosis or meiosis) Phase
13. G0 Phase A nondividing state occupied by cells that have left the cell
cycle, sometimes reversibly.
they're either in a maturation phase or they never divide (like
neu- rons)
14. G1 (gap 1) Phase -cell growth
-synthesis of cell constituents (organelles double)
15. S (synthesis) Phase -DNA replication
