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Rancier - Genetics
Test Description: Genetics Review - 8th grad science
Instructions: Answer all questions to get your test result.
1) What is the function of DNA in a cell?
A
providing energy for activities
B
carrying genetic material
C
regulating the movement of nutrients
D
storing and releasing chemicals
2) Compared to the amount of hereditary information in a human body cell, how much hereditary information is contained in a human sex cell?
A
the same amount
B
one-half the amount
C
twice the amount
D
one-quarter the amount
3) In animal skin tissue, cell division is responsible for
A
sexual reproduction
B
obtaining energy
C
growth and repair
D
production of sex cells
4) Chromosome is to nucleus as DNA is to
A
gene
B
cell membrane
C
chloroplast
D
cytoplasm
5) In humans, a trait can be determined by one pair or many pairs of:
A
organs
B
microbes
C
cells
D
genes
6) If A = straight hairline (dominant) and a = peaked hairline (recessive), the parent whose genes are aa:
A
has a peaked hairline
B
may have AA offspring
C
must be dominant
D
has a straight hairline
7) What is a Punnett Square used to determine
A
the possibility of having twins
B
the rate of mutation
C
the probability of a trait being passed on
D
the production of sex cells
8) If A = straight hairline and a = peaked hairline, why will Aa individuals have a straight hairline rather than a peaked hairline?
A
The peaked hairline occurs only in females
B
The peaked hairline is a mutation
C
The straight hairline is dominant
D
The straight hairline is recessive
9) A new type of tomato is better tasting and has a longer shelf life. It is produced by placing additional gene segments into the cells of the tomato plant. This process is known as:
A
selective breeding
B
natural selection
C
sexual reproduction
D
genetic engineering
10) In humans, a fertilized egg contains 46 chromosomes. Which is the correct number of chromosomes contained in the sperm and egg before they unite to make the fertilized egg?
A
46 sperm chromosomes, 46 egg chromosomes
B
0 sperm chromosomes, 46 egg chromosomes
C
23 sperm chromosomes, 23 egg chromosomes
D
46 sperm chromosomes, 0 egg chromosomes
*select an answer for all questions
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