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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
storing and releasing chemicals
B
carrying genetic material
C
providing energy for activities
D
regulating the movement of nutrients
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
one-quarter the amount
B
twice the amount
C
one-half the amount
D
the same amount
3) In animal skin tissue, cell division is responsible for
A
production of sex cells
B
obtaining energy
C
growth and repair
D
sexual reproduction
4) Chromosome is to nucleus as DNA is to
A
cytoplasm
B
cell membrane
C
gene
D
chloroplast
5) In humans, a trait can be determined by one pair or many pairs of:
A
genes
B
organs
C
cells
D
microbes
6) If A = straight hairline (dominant) and a = peaked hairline (recessive), the parent whose genes are aa:
A
has a straight hairline
B
must be dominant
C
has a peaked hairline
D
may have AA offspring
7) What is a Punnett Square used to determine
A
the probability of a trait being passed on
B
the rate of mutation
C
the production of sex cells
D
the possibility of having twins
8) If A = straight hairline and a = peaked hairline, why will Aa individuals have a straight hairline rather than a peaked hairline?
A
The straight hairline is recessive
B
The peaked hairline is a mutation
C
The straight hairline is dominant
D
The peaked hairline occurs only in females
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
genetic engineering
D
sexual reproduction
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, 0 egg chromosomes
B
46 sperm chromosomes, 46 egg chromosomes
C
0 sperm chromosomes, 46 egg chromosomes
D
23 sperm chromosomes, 23 egg chromosomes
*select an answer for all questions
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