What are the possible combinations of a pea plant with the alleles PP and a male pea plant with the alleles pp. P= purple p= white
a)
all Pp
b)
all PP
c)
Pp,PP,Pp,PP
d)
all pp
5.
When the allele combination is a dominate and a recessive trait together which trait will be seen?
a)
Dominate
b)
Recessive
c)
none
d)
both
6.
What is a phenotype?
a)
The expression of a trait; physical appearance.
b)
refers to the genetic makeup of an individual
c)
An organism that has the same genes for a trait (ex. TT or tt)
d)
the passing of traits from parent to offspring
7.
Black fur is dominant (B) over white fur (b). Find the probability of heterozygous offspring using the following genotype of these parents. Bb + bb
a)
0%
b)
25%
c)
50%
d)
100%
8.
Gregor Mendel is often called ....
a)
The father of heredity.
b)
The father of genetics.
c)
The king of peas
d)
The father of punnett squares.
9.
It is NOT possible for two purebred black rabbits (both BB) to produce white offspring.
a)
True
b)
False
10.
Bob the abominable snowman lives in the snowy Andes mountains. He has white fur, which blends in nicely. He is therefore dismayed when his mate keeps having red-furred babies. What is Bob's likely genotype?
a)
Homozygous Dominant
b)
Heterozygous
c)
Homozygous Recessive
11.
Which characteristic is inherited?
a)
hair color
b)
sleeping late
c)
enjoying hiking
d)
loving to read
12.
How many chromosomes are present in a human cell nucleus?
a)
23 chromosomes or 46 pairs
b)
46 pairs or 92 chromosomes
c)
46 chromosomes or 23 pairs
d)
32 chromosomes or 16 pairs
13.
A pedigree chart is used to _______.
a)
predict percentage of offspring with a trait
b)
predict genotypic probabilities
c)
track inherited traits through generations
d)
identify the genotype of parents
14.
A Punnett square is used to _______.
a)
predict the genotypic and phenotypic probabilities of possible offspring
b)
determine if a trait runs in a family
c)
track inherited traits through many generations
d)
identify organisms that are carriers of a specific trait
15.
Sickle cell anemia is known to run in a family. A pedigree chart for this family is shown below.
What best describes offspring 4?
a)
A female carrier of the disease
b)
A female having the disease
c)
A male carrier of the disease
d)
A male having the disease
16.
Which of the following genotypes are Purebred? Select 2 answers.
a)
aA
b)
Aa
c)
AA
d)
aa
17.
If A = green pods and a = yellow pods, what are the GENOTYPIC RATIOS of the offspring in the Punnett square?
a)
100% green pods
b)
100% yellow pods
c)
100% heterozygous
d)
100% homozygous dominant
18.
Why is DNA important?
a)
it is very small and very complicated
b)
because we eat it every day for energy
c)
it serves as the blueprint (directions) for traits of all living things
19.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
ribosome
d)
nucleus
แป้นคำตอบ
DNA and Punnett squares
คำถามทั้งหมด: 19
1.
b) Phenotype
2.
b) the possible combination of alleles in a gene
3.
a) yellow pea seeds
4.
a) all Pp
5.
a) Dominate
6.
a) The expression of a trait; physical appearance.
7.
c) 50%
8.
b) The father of genetics.
9.
a) True
10.
c) Homozygous Recessive
11.
a) hair color
12.
c)
46 chromosomes or 23 pairs
13.
c)
track inherited traits through generations
14.
a)
predict the genotypic and phenotypic probabilities of possible offspring
15.
d)
A male having the disease
16.
c)
AA
, d)
aa
17.
c)
100% heterozygous
18.
c)
it serves as the blueprint (directions) for traits of all living things
19.
d) nucleus
140 %
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