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WorksheetsExtra works Tri-3
Total questions: 28
Worksheet time: 14mins
Heterozygous is when...
the alleles are the same
the alleles are different
the alleles are absent
the alleles are present
The dominant trait is
purple flower
white flower
both are dominant
there is no dominant color
When a mouse with black fur is crossed with a mouse with white fur, all 1st generation offspring have black fur. Which results can be expected in the 2nd generation?
100% black
50% grey, 25% white
25% white , 75% black
50% black, 50% white
B is brown eyes and b is blue eyes. What is the phenotype for Bb?
Brown eyes
Blue eyes
Hazel eyes
A is for long arms and a is for short arms. What is the phenotype for the genotype AA?
short arms
long arms
medium arms
What is the probability the offspring will be Heterozygous?
25%
50%
75%
100%
In the Punnett square shown, what must the genes of the missing parent be?
BB
bb
Bb
In a study of several generations, yellow seeds appeared more frequently than green seeds. Which of the following is most likely the reason for this observation?
Green seeds are dominant to yellow seeds.
Yellow seeds are recessive to green seeds
Green seeds are recessive to yellow seeds.
Suppose an animal body cell has 16 chromosomes. How many chromosomes would a sex cell of this animal have
16
8
23
32
How many pairs of chromosomes do humans have?
23
46
24
16
In order for a recessive trait to show up,.....
both alleles have to be dominant
one allele has to be recessive
both alleles have to be recessive
one allele has to be recessive while the other is dominant
Which statement best supports why many offspring look similar to their parents?
Parents choose which traits to pass on to their offspring.
Offspring inherit traits from only one parent.
Offspring inherit traits from both parents.
Which color REFLECTS all colors of light?
red
white
black
blue
Red objects appear 'red' because:
red objects are made from red materials
red objects absorb red light
red objects don't reflect any light
red objects absorb all other colour except red light
If you were building a house in Alaska (where it can be daylight for months!), what type of material would be best to cover your windows with that would help keep the Sun out of your room so you can sleep?
Opaque material
transparent glass
translucent material
Your grandma has plants in her kitchen. They need lots of light! What type of windows should she have installed that will be best for her indoor garden?
wooden window
frosted glass window
glass window
What is the best explanation for Mickey seeing himself in the mirror?
refraction
reflection
flipped
absorbed
Why does the straw appear to be bent?
light is reflected
light is absorbed
light is turned
light is refracted
Is a convex lens thicker or thinner in the middle?
Thicker
Thinner
Why does light refract when it travels from one medium to another?
Light refracts because it changes color in a new medium.
Light refracts because it changes shape in a new medium.
Light refracts because it changes speed and direction in a new medium.
Light refracts because it changes size in a new medium.
According to the law of superposition, the oldest fossils are found
At the bottom of the rock layers
At the top of the rock layers
In the middle of the rock layers
Somewhat near the surface
Which layer is OLDER? Intrusion M or Layer D?
Layer D
Intrusion M
curves or bends in a river
floodplain
stream
oxbow lake
meanders
When a runoff forms tiny grooves this is formed
Gully
Rills
Tributary
Stream
The main difference between gullies and rills
Gullies are wide and rills are narrow
Gullies are narrow and rills are wide
Both are wide
Both are narrow
Waterfalls
May occur where the stream meets the rills
May occur where the gully meets the ocean
May occur where the river meets the area of rock that is very hard and erodes slowly
May occur where the river meets the area of rock that is very hard and erodes fast
This is a picture of a ____________________
slump
mudflow
landslide
creep
The slowest type of mass movement is called a _____________________.
slump
landslide
creep
mudflow
