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Genetics Review
Test Description: Review for chapter test on genetics.
Instructions: Answer all questions to get your test result.
1) If Jessica has light eyes (bb) and both of her parents have dark eyes (Bb) which statement is true?
A
Jessica inherited BOTH genes from her father.
B
Jessica inherited BOTH genes from her mother.
C
Jessica inherited on dominant form of the gene from each parent.
D
Jessica inherited one recessive form of the gene from each parent.
2) A mature plant is tall and has white flowers. Another mature plant of the same species is short and has white flowers. The 2 plants are cross bred. Which of these BEST describes the offspring of these 2 plants?
A
tall plants with white leaves
B
short plants with dark leaves
C
tall plants with colored flowers
D
short plants with white flowers
3) If a purebred, normal feathered bird (FF) is crossed with a frizzy feathered bird (ff), how many different feather phenotypes are possible in the offspring?
A
4
B
3
C
2
D
1
4) In fruit flies, gray body color (G) is dominant over black body color (g). What kind of offspring would you expect from parents who are both heterozygous (Gg x Gg)?
A
0% gray, 100% black
B
75% gray, 25% black
C
100% gray, 0% black
D
25% gray, 75% black
5) A basketball player is seven feet tall. Why did he most likely grow that tall?
A
His birth parents played basketball.
B
He stretched his legs every day.
C
His birth parents are also tall.
D
He learned how to play sports
6) The combination Tt represents a ______________________ genotype.
A
homozygous
B
heterozygous
C
recessive
D
incomplete
7) The instructions that determine coat color in dogs are stored in the ___________.
A
cytoplasm of skin cells
B
chromosomes of every cell
C
mitochondria of hair cells
D
membrane of every cell
8) Two spotted leopards produce a litter of four cubs. Three of the cubs are spotted and one is solid black. The black coat is probably what type of trait?
A
recessive
B
sex-linked
C
dominant
D
polygenic
9) In a Punnett square, a capital letter (T) stands for a ________ allele.
A
dominant
B
sex-linked
C
heterozygous
D
recessive
10) Solar radiation caused a skin cell mutation in an individual. Who will be affected by this mutation?
A
only male offspring
B
only female offspring
C
only the individual
D
both the individual and all offspring
*select an answer for all questions
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