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Unity & Diversity
Test Description: Review for unity and diversity unit. Testable Questions.
Instructions: Answer all questions to get your test result.
1) What is the relationship between genes and chromosomes?
A
Chromosomes are compact storage units for genes
B
Genes and chromosomes are the same thing
C
Chromosomes determine gender, genes determine other cellular functions
D
genes are found in every cell, chromosomes are found only in sex cells.
2) The physical characteristics of an organism is know as the organism's
A
Genotype
B
Homozygous
C
Heterozygous
D
Phenotype
3) The term used to refer to an organism that has two different alleles for the same trait is. . .
A
Heterozygous
B
Homozygous
C
Phenotype
D
Genotype
4) Which represents the genotype of a homozygous condition?
A
BC
B
bb
C
bc
D
Bb
5) In pea plants, tall is dominant over short. What size pea plants will result when a pure tall plant is crosses with a pure short plant?
A
Middle-sized plants
B
Tall plants
C
Short plants
D
Some tall and some short plants
6) All of the following are inherited traits EXCEPT
A
Color blindness of a person
B
A widow's peak on a person's forehead.
C
Scars on a person's forehead
D
Eye color of a person
7) Sexual reproduction occurs in
A
Some single-celled organisms
B
Animals
C
All of the above
D
Plants
8) Organisms that have two parents. . .
A
Exhibit traits from only one parent.
B
Receive individual traits from only one parent.
C
Exhibit traits from each parent.
D
Receive a full set of genes from each parent.
9) What is the major cause of variation within a species?
A
Extinction
B
Photosynthesis
C
Sexual Reproduction
D
Asexual Reproduction
10) If two short-winged flies mated and the resulting offspring had some short-winged and tall-winged flies. What could the explanation be?
A
Having tall wings must be the dominant trait.
B
A fly with tall wings must be homozygous dominant
C
The short-wings must be a dominant trait
D
The parents must have had a combination of the traits they passed on to the offspring.
*select an answer for all questions
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