In garden peas, tall is dominant over short, if you have a tall garden pea plant
ID: 14384 • Letter: I
Question
In garden peas, tall is dominant over short, if you have a tall garden pea plant, but do not show its genetic background, you want to determine whether it is homogygous or heterozygous, you should cross itw ith a plant that isA homozygous dominant
B homozygous recessive
c heterozygous
d of the same genotype
e tail
An analysis of the nucleus of the cells in a cheek smear from a human reveals the presence of one Barr body. With respective sex-chromosomal makeup, this personal is probably an(a)
a. normal male
b. normal female
c XO individual
d XXX female
E XXY male
Explanation / Answer
In garden peas, tall is dominant over short, if you have a tall garden pea plant, but do not show its genetic background, you want to determine whether it is homogygous or heterozygous, you should cross itw ith a plant that is
A homozygous dominant
B homozygous recessive
c heterozygous
d of the same genotype
e tail
test cross
Tt x tt
An analysis of the nucleus of the cells in a cheek smear from a human reveals the presence of one Barr body. With respective sex-chromosomal makeup, this personal is probably an(a)
a. normal male
b. normal female
c XO individual
d XXX female
E XXY male
radom inactivation of one of x-chromsomes occurs in female.
inactivated is seen as sex chromation ---------BARR BODY -IN BUCCAL SMEAR