Q1 What is the name for one half of a chromosome?
A. Protein Wrong
B. Gene Wrong
C. Centromere Wrong
D. Chromatid Correct
Q2 Which statement about genetic material is correct?
A. Chromosomes are made up of genes. Correct
B. Centromeres connect two chromosomes. Wrong
C. Chromatids contain chromosomes. Wrong
D. Genes encode deoxyribonucleic acid. Wrong
Q3 In pea plants, the allele for tall height, T, is dominant over the allele for short height, t. A pea plant has two different alleles for height. Which statement about the pea plant is correct?
A. The phenotype for height is short, and the genotype is Tt. Wrong
B. The phenotype for height is tall, and the genotype is Tt. Correct
C. The phenotype for height is tall, and the genotype is TT. Wrong
D. The phenotype for height is short, and the genotype is tt. Wrong
Q4 How are the terms homozygous and heterozygous different?
A. Homozygous describes having recessive alleles for a trait, and heterozygous describes having dominant alleles for a trait. Wrong
B. Homozygous describes having dominant alleles for a trait, and heterozygous describes having recessive alleles for a trait. Wrong
C. Homozygous describes having two of the same allele for a trait, and heterozygous describes having two different alleles for a trait. Correct
D.Heterozygous describes having two of the same allele for a trait, and homozygous describes having two different alleles for a trait.
Heterozygous, describes having two of the same allele for a trait, and , homozygous, describes having two different alleles for a trait. Wrong
Q5 How are the terms purebred and hybrid different?
A. Purebred is a term used for an organism with dominant alleles, and hybrid is a term used for an organism with recessive alleles. Wrong
B. Purebred is a term used for a homozygous organism, and hybrid is a term used for a heterozygous organism. Correct
C. Purebred is a term used for a heterozygous organism, and hybrid is a term used for a homozygous organism. Wrong
D.Purebred is a term used for an organism with recessive alleles, and hybrid is a term used for an organism with dominant alleles. Wrong
Q6 What is the scientific term for a section of a chromosome?
A. amino acid Wrong
B. protein Wrong
C. gene Correct
D. hemoglobin Wrong
Q7 What is the scientific term used to describe a structural change in a gene?
A. hemoglobin Wrong
B. genetic code Wrong
C. anemia Wrong
D. mutation Correct
Q8 Which statement is correct about the population of peppered moths in modern Britain?
A. The dark-colored moths are most common due to antipollution regulations. Wrong
B. The dark-colored moths are most common due to dark-colored tree bark. Wrong
C. The light-colored moths are most common due to light-colored tree bark. Wrong
D. The light-colored moths are most common due to antipollution regulations. Correct
Q9 What is one step in the process of selective breeding?
A. choosing individuals with a variety of traits to reproduce Wrong
B. allowing organisms to select their own mates Wrong
C. choosing individuals with desirable traits to reproduce Correct
D. allowing organisms to reproduce without interference Wrong
Q10 Anvi measured the height of five plants over a three-week experimental period and obtained the following data for the final week (in cm):
15, 18, 21, 19, 20
Calculate the final average height for this group of plants. Round your answer to one decimal place.
A. 18.6 cm Correct
B. 6.0 cm Wrong
C. 13.3 cm Wrong
D. 4.2 cm Wrong
Q11 Which environmental factor would decrease plant growth?
A. drought Correct
B. space Wrong
C. light Wrong
D. fertilizer Wrong
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