Test 3.3 Bio

When a Bb individual makes sex cells, half of his sex cells will have B and half will have b, according to: a. Mendel's Law of Segregation b. Mendel's Law of Independent Assortment c. Mendel's Law of Separation d. Mendel's Law of Indignant Assortment

a. Mendel's Law of Segregation

When a BbTt individual makes sex cells, his B and b alleles will separate independently of his T and t alleles due to: a. Mendel's Law of Segregation b. Mendel's Law of Independent Assortment c. Mendel's Law of Separation d. Mendel's Law of Indignant Assortment

b. Mendel's Law of Independent Assortment

During which stage of meiosis are homologues separated from each other? a. prophase I b. anaphase I c. telophase I d. prophase II e. anaphase II

b. anaphase I

In normal dominance (called "simple dominance"), which of the following is true? a. if one allele for the recessive trait is present, the recessive trait is always expressed. b. if one allele for the dominant trait is present, the dominant trait is always expressed. c. heterozygotes are an intermediate between the dominant and recessive forms. d. all of the above

b. if one allele for the dominant trait is present, the dominant trait is always expressed

What is the importance of crossing-over? a. it doubles the DNA b. it increases the likelihood that daughter cells contain different genetic material c. it produces the proteins that are associated with DNA in chromosomes d. it increases chromosome condensation e. it separates the homologous chromosomes

b. it increases the likelihood that daughter cells contain different genetic material

At which stage of meiosis is each chromosome single-stranded? a. prophase I b. metaphase II c. anaphase II d. prophase II e. metaphase I

c. Anaphase II

If a sperm cell contains 8 chromosomes, it comes from an animal that has chromosomes in each body cell. a. 4 b. 8 c. 12 d. 16 e. 24

d. 16

If plant that is heterozygous for 2 traits is crossed with itself, what will be the phenotypic ratio of its offspring? a. 1:2:1 b. 3:1 c. 3/8 d. 9:3:3:1

d. 9:3:3:1

Which of the following statements is FALSE regarding interkinesis? a. interkinesis occurs after a cell finishes a nuclear division b. interkinesis is the stage that precedes a phrophase stage. c. interphase involves DNA replication and interkinesis does not d. None of the above. All of these are true.

d. None of the above. All of these are true.

Which of the following describe alleles? a. alternate forms of genes b. represented with letters by scientists (B or b, R or r) c. genetic material d. all of the above

d. all of the above

In meiosis, the parents cell is _____, and the daughter cells are _____. a. haploid; haploid b. haploid; diploid c. diploid; diploid d. diploid; haploid

d. diploid; haploid

Which is NOT true about daughter cells of mitosis and meiosis? a. In meiosis, the cells produced are haploid b. In meiosis, four cells are produced c. In mitosis, two cells are produced d. in mitosis, the cells produced are genetically identical e. in meiosis, the cells produced are genetically identical

e. in meiosis, the cells produces are genetically identical

In humans, somatic cells have _____ chromosomes, while gametes have _____ chromosomes.

46;23

Homologous chromosomes: a. are similar in size b. always carry the same genes in the same order c. always carry the same alleles for the same genes in the same order d. A & B e. A & C

D. A & B

The overall function of meiosis includes all of the following EXCEPT: a. gamete production b. producing 1N cells from 2N cells c. providing genetic variation in sexually reproducing organisms d. growth of the overall individual

D. growth of the overall individual