09 Jun If a child has two genes for blonde hair (one from each parent), his genotype is said to be…
Question
1. If a child has two genes for blonde hair (one from each parent), his genotype is said to be
A. heterozygous
B.homozygous.
C. dominant.
D. recessive.
2. A _______ is a tool that shows genetic traits that run in a family, such as cancer.
A. inheritance
B. pedigree
C. dominance
D. genealogy
3. Change over time is referred to as
A. evolution.
B. adaptation.
C. variation.
D. mutation.
4. Homeostasis is the body’s ability to maintain constant _______ conditions when _______ conditions
change.
A. temperature; pH
B. internal; external
C. external; internal
D. oxygen; temperature
5. Migration is a _______ adaptation.
A. structural
B. natural
C. behavioral
D. functional
6. Blood type is an example of a trait that’s inherited by
A. incomplete dominance.
B. gender-specific alleles.
C. codominance.
D. polygenic inheritance.
7. If two brown-eyed people have a blue-eyed child, we can deduce which of the following?
A. The gene for blue eyes is sex-linked.
B. The child’s eye color is the result of mutation.
C. The gene for brown eyes is recessive
D. The gene for blue eyes is recessive.
8. Which of the following is not a macromolecule?
A. Lipid
B. Protein
C. Platelet
D. Carbohydrate
9. When traits inherited from both parents are expressed, the alleles are said to have
A. mutations.
B. codominance.
C. polygenic inheritance.
D. incomplete dominance.
10. Slight differences in inherited traits, such as feather color in birds, are called
A. differential traits.
B. variations.
C. adaptations.
D. mutations.
11. Which of the following is not true of mutations?
A. Mutations can be passed from parent to child.
B. A mutation can result in a change of function.
C. Mutations can’t result in a change in appearance.
D. A mutation is permanent.
12. Water is able to dissolve many substances because of its
A. state.
B. solubility.
C. polarity.
D. viscosity.
13. Which of the following is not a carbohydrate?
A. Sugars
B. Cholesterol
C. Starches
D. Cellulose
14. Which of the following is not part of the structure of a nucleotide?
A. Sugar
B. Phosphate group
C. Nitrogen base
D. Amino acid
15. Which of the following is not true of Mendel’s experiment?
A. Mendel crossed two true-breeding plants.
B. Mendel proposed that the green pods were recessive.
C. The yellow trait seemed to disappear in the first cross.
D. The yellow trait reappeared in the second cross.
16. When a farmer crosses two different types of plants to grow one that has a desirable trait from each,
this process is known as
A. agricultural manipulation.
B. genetic mutation.
C. trait farming.
D. selective breeding.
17. Which part of the body is responsible for absorbing nutrients?
A. Pancreas
B. Small intestine
C. Large intestine
D. Stomach
18. Factors like lack of variation and environmental changes can cause a species to fail to survive. This is
known as
A. evolution.
B. conservation.
C. mutation.
D. extinction.
19. Which of the following is not a type of adaptation?
A. Structural
B. Mechanical
C. Functional
D. Behavioral
20. If the gene for a trait is carried on an X or Y chromosome, it’s a _______ trait.
A. sex-linked
B. codominant
C. polygenic
D. dominant
21_______ are on chromosomes in the nucleus of a cell.
A. Traits
B. Mutations
C. Genes
D. Alleles
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