BSC 1005 exam 3 genetics FSU questions with
verified answers
Alleles Ans✓✓✓ Genes present in alternate forms. In true breeding,
they are identical. Homozygous.
In F1, one allele contributes for both parents, heterozygous.
Aneuploidy Ans✓✓✓ Refers to at least one more or one less
chromosome than the diploid member (results from nondisjunction -
failure of either homologous chromosomes in anaphase 1 or sister
chromatids in anaphase 2 to separate at some stage of meiosis)
Back cross Ans✓✓✓ Cross between the offspring and a parental line
Blending theory of inheritance Ans✓✓✓ Appearance of offspring
would be an intermediate of the parents
Cells that differ in chromosome number Ans✓✓✓ Mosaicism
Codominance Ans✓✓✓ Joint expression of both alleles in the
heterozygote (ex. Blood groups)
Diploid Ans✓✓✓ Two copies of every gene
, Example of sex-influenced trait Ans✓✓✓ Male pattern baldness
Examples of polygenic inheritance Ans✓✓✓ Height, eye color, skin
color
Fixity of species Ans✓✓✓ Animal and plant groups remained
unchanged in form from the moment of their appearance on earth
Gametes Ans✓✓✓ Sperm and egg
Genotype Ans✓✓✓ Genetic makeup
Hemophilia Ans✓✓✓ X-linked gene that causes a failure of clotting in
the blood
How many chromosome from each parent? Ans✓✓✓ 23 (22
autosomes, 1 sex cell)
[46 chromosomes total]
In DNA Ans✓✓✓ The concentration of adenine is equal to the
concentration of thymine
verified answers
Alleles Ans✓✓✓ Genes present in alternate forms. In true breeding,
they are identical. Homozygous.
In F1, one allele contributes for both parents, heterozygous.
Aneuploidy Ans✓✓✓ Refers to at least one more or one less
chromosome than the diploid member (results from nondisjunction -
failure of either homologous chromosomes in anaphase 1 or sister
chromatids in anaphase 2 to separate at some stage of meiosis)
Back cross Ans✓✓✓ Cross between the offspring and a parental line
Blending theory of inheritance Ans✓✓✓ Appearance of offspring
would be an intermediate of the parents
Cells that differ in chromosome number Ans✓✓✓ Mosaicism
Codominance Ans✓✓✓ Joint expression of both alleles in the
heterozygote (ex. Blood groups)
Diploid Ans✓✓✓ Two copies of every gene
, Example of sex-influenced trait Ans✓✓✓ Male pattern baldness
Examples of polygenic inheritance Ans✓✓✓ Height, eye color, skin
color
Fixity of species Ans✓✓✓ Animal and plant groups remained
unchanged in form from the moment of their appearance on earth
Gametes Ans✓✓✓ Sperm and egg
Genotype Ans✓✓✓ Genetic makeup
Hemophilia Ans✓✓✓ X-linked gene that causes a failure of clotting in
the blood
How many chromosome from each parent? Ans✓✓✓ 23 (22
autosomes, 1 sex cell)
[46 chromosomes total]
In DNA Ans✓✓✓ The concentration of adenine is equal to the
concentration of thymine
