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WorksheetsUnit 7 Review
Total questions: 31
Worksheet time: 42mins
Somatic cells are body cells which are produced through (a) , gametes are sex cells produced through (b) .
Which of the following are true about Cross-Over
Occurs during Prophase 1
Increases genetic variation
Occurs in mitosis
Occurs in meiosis
Why does Arctic Fox fur color change from white in winter to brown in the summer?
Diploid
2 sets of chromosomes
Haploid
1 set of chromosomes
Gametes
sex cells
Somatic
body cells
Cross-Over
increases genetic variation
In which phase is where DNA is replicated?
G1 phase
S phase
Metaphase
Anaphase
In which phase is where chromosomes line up in the middle?
Prophase
Metaphase
Anaphase
Telophase
In which phase is where chromosomes are separated by spindle fibers?
Prophase
Metaphase
Anaphase
Telophase
(a) is the absence of a chromosome while (b) is having an extra chromosome.
Which of the following statements are true about gene expression?
Environmental factors such as climate can affect gene expression.
Gene expression is only impacted by probability.
Gene expression is not impacted by environmental factors.
Enzymes in a cell can control gene expression.
In humans, a Diploid cell has (a) chromosomes while a haploid cell has (b) .
Based on this pedigree is the identified trait dominant or recessive.
Dominant
Recessive
For the given trait (cataracts) is it a dominant or recessive trait?
Dominant
Recessive
How do you know that cataracts is a recessive trait?
This is an example of:
Multiple alleles
Complete dominance
Incomplete dominance
Recessiveness
Which of the following are examples of gene expression as a regulated process.
Red blood cell transporting oxygen through the body.
Liver cells producing bile to aid in digestion.
Lung cells taking in carbon monoxide.
Small intestine cells releasing toxins into the body.
Brown eye color is dominant to blue. A heterozygous brown eyed man's genotype would be (a) while a blue eyed woman would be (b) .
Brown eye color is dominant to blue eye color. A heterozygous brown eyed man is crossed with a homozygous brown eyed woman. The probability of their children having brown eyes is (a) and the probability of the children having blue eyes is (b)
Black eyes is dominant to red eyes. If a homozygous black eyed rat is crossed with a homozygous red eyed rat what will be the offspring phenotype?
100% red eyed
50% black eyed
50% red eyed
75% Black eyed
25% red eyed
100% black eyed
Grey (G) fur is dominant to white (g) fur. and Black eyes (B) are dominant to red (b) eyes. Ggbb is crossed with ggBB. What are the possible offspring phenotypes?
white fur red eyes
white fur black eyes
grey fur red eyes
grey fur black eyes
Widows Peak (Q) is dominant to no widows peak (q) and Attached earlobes (E) is dominant to unattached earlobes (e). If QQEe was crossed with Qqee, what are the possible offspring phenotypes?
Widows peak and attached earlobes
Widows peak and unattached earlobes
no widows peak and attached earlobes
no widows peak and unattached earlobes
What process is this? How do you know?
What process is this? How do you know?
Human somatic cells produced during (a) have (b) chromosomes. Human gamete cells produced during (c) have (d) chromosomes.
What is an example of monosomy or trisomy?
What are the negative impacts or monosomy or trisomy?
From a cross between QqEe x QqEe what is the probability that the offspring will be heterozygous for both traits?
0%
25%
50%
100%
Why is meiosis and important process for some organisms?
Tall (T) plants are dominant to short (t). Parent one is heterozygous parent 2 is homozygous recessive. What are the parent genotypes?
Tt x TT
Tt x tt
TT x tt
TT x TT
Sex linked traits are found in the:
X chromosome
Y chromosome
1st chromosome pair
22nd chromosome pair
Night blindness is a recessive sex linked trait. What probability do the offspring have of expressing night blindness?
0%
25%
50%
100%
How do stem cells become specialized?
