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- Q1
The following are allele combination of human blood types
iI
multiplem://IAIA: IA IB: ii: IAi:
OA
IIi
10sS9LT -Id -29 - Q2
In a DNA structure, which compounds are responsible for its backbone?
sugar and nitrogen bases
phosphate and sugar
nitrogen bases and phosphate
only nitrogen bases
10sS9LT -Id -29 - Q3
Choose which of the following statements describe DNA .
it can relay messages to other molecules
it has a blue color
multiplem://it contains the instructions for building an organism: it is like a fingerprint:made up of units called nucleotides
it has a single helix
10sS9LT -Id -29 - Q4
Which is NOT TRUE about nucleotide?
It may contain one or more bases
It has a phosphate group.
It contains deoxyribose sugar.
It contains a nitrogen base.
10s - Q5
Which of the following ideas is TRUE about DNA molecule?
DNA has Thymine that pairs with Cytosine.
DNA can only direct how organisms reproduce.
DNA is only a single stranded molecule.
DNA is double stranded with helical form.
10sS9LT -Id -29 - Q6
Bases in a DNA are complementary. Which is true about complementary base pairing if there are 20 Guanine in the DNA strand?
there will be 20 Adenine bases.
only 10 Cytosine, since its helical
cannot be determined
there will be 20 Cytosine bases.
10sS9LT -Id -29 - Q7
Which BEST describes a gene?
it is smaller than DNA
it is a DNA
it is a segment of DNA
it is a tightly coiled DNA
10sS9LT -Id -29 - Q8
Which is TRUE about the number of chromosomes in humans?
23 pairs, 46 total
46 pairs, 23 total
46 pairs, 46 total
23 pairs, 23 total
10sS9LT -Id -29 - Q9
________________________when one allele for a certain trait is not completely dominant over the other.
co dominance
incomplete dominant
multiple allele
sex linked trait
10s - Q10
A cross between a black cat and a tan cat produces a tabby pattern (black & tan fur together). What pattern of inheritance does this illustrate?
multiple allele
incomplete dominance
sex linked traits
co dominance
10sS9LT -Id -29 - Q11
Which is TRUE about blood type O?
It has A and B antigens.
It has a heterozygous allele.
It is a universal donor.
It has only A antigen.
10sS9LT -Id -29 - Q12
How many alleles do we have for blood?
1
0
2
3
10sS9LT -Id -29 - Q13
How many phenotypes are there in a human blood group system?
2
4
1
3
10sS9LT -Id -29 - Q14
Which is an example of sex - influenced trait among humans?
colorblindness
hemophilia
all of the choices
pattern baldness
10sS9LT -Id -29 - Q15
What happens when sex chromosomes of males have a gene for colorblindness?
males sometimes become colorblind or carrier
males are normal vision
males have still normal vision and not colorblind
males will become colorblind
10sS9LT -Id -29