Unit 6 - Review
Authored by George Mims
Biology
11th Grade
NGSS covered
Used 10+ times
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11 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the significance of the crossing over that occurs between homologous chromosomes during meiosis?
It causes chromosomes to condense.
It maintains the diploid number of the species.
It reduces chromosomes from 2n to n.
It results in genetic variation due to new gene combinations.
Tags
NGSS.HS-LS3-2
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which statement is true about mitosis?
It is a form of asexual reproduction resulting in daughter cells that each have half the number of chromosomes as the parent cell.
It is a form of asexual reproduction resulting in daughter cells that each have one set of chromosomes identical to the parent cell.
It is a form of sexual reproduction resulting in daughter cells that each have half the number of chromosomes as the parent cell.
It is a form of sexual reproduction resulting in daughter cells that each have one set of chromosomes identical to the parent cell.
Tags
NGSS.HS-LS1-4
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which statement best distinguishes meiosis from mitosis?
Meiosis replicates then separates genetic information.
Meiosis combines the genetic information of egg and sperm.
Meiosis maintains the cell’s original chromosome number.
Meiosis reduces the cell’s original chromosome number by half.
4.
DROPDOWN QUESTION
2 mins • 1 pt
Color blindness is a sex-linked recessive disorder. The gene for this trait is found on the X chromosome. What are the chances of a child born to a carrier mother and a normal father developing color blindness? (a)
Tags
NGSS.HS-LS3-2
NGSS.HS-LS3-1
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A man and a woman are both heterozygous for phenylketonuria (PKU), an autosomal recessive genetic disorder. Why might they be concerned about having children?
There is a 25% chance their children will have the disorder.
There is a 50% chance their sons will have the disorder.
There is a 50% chance their daughters will be carriers of the disorder.
There is a 75% chance their children will have the disorder.
Tags
NGSS.HS-LS3-2
NGSS.HS-LS3-1
6.
DROPDOWN QUESTION
2 mins • 1 pt
In rats, black coat color (B) is dominant to white coat color (b). When a black rat was crossed with a white rat, some white offspring occurred. What was the genotype of the black rat? (a)
Tags
NGSS.HS-LS3-2
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A scientist studying the inheritance of flower color crossed two plants that were heterozygous for red and white flower color. She collected and planted 100 seeds/offspring obtained from cross. Once all seeds germinated, 48 of the plants formed pink flowers while 30 plants formed red flowers.
How many offspring were expected to have white flowers?
25
30
50
75
Tags
NGSS.HS-LS3-2
NGSS.HS-LS3-1
NGSS.HS-LS3-3
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