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WorksheetsD12T5 Xline 3 & 4
Total questions: 25
Worksheet time: 15mins
During _______ the cell grows, its organelles and chromosomes replicate.
cytokinesis
mitosis
interphase
meiosis
Which of the following event DOES NOT take place during mitosis?
Division of centromere
Chromosomes replication.
Migration of chromosome to opposite poles.
Chromosomes line up at the metaphase
Which of the following DOES NOT involve in the movement of chromosomes during cell division?
Nuclear
Microtubule membrane
Centromere
Centriole
In comparing mitosis and meiosis, which of the following statements is TRUE?
Meiosis I is more like mitosis than is meiosis II.
Both cell divisions produce four cells.
Synapsis occurs in both cell divisions.
Meiosis occurs to germ cells, while mitosis occurs to somatic cells.
Synapsis occurs during _____.
anaphase II
prophase II
telophase I
prophase I
FIGURE 3.2 shows a type of human cell. What is CORRECT about
The cell contains 22 autosomes.
The cell contains 46 chromosomes.
The cell is about to undergo mitosis
D. The cell is about to undergo meiosis.
Which of these choices correctly shows a location for a type of cell division?
Bone - meiosis.
Testes - mitosis.
Ovaries - meiosis
Stomach - meiosis
How is meiosis related to sexual reproduction?
Meiosis allows the offspring produced during sexual reproduction to grow and develop
Meiosis joins together the gametes during sexual reproduction to produce new offspring.
Meiosis produces the gametes that join to form new offspring during sexual reprodution.
Meiosis produces the somatic cells that join to form new offspring during sexual reproduction.
If a sexually reproducing organism has 28 chromosomes in its body cells, how many chromosomes did it inherit from each parent?
7
16
14
28
Which of the following statements correctly describes the importance of cell division in unicellular organisms?
Cell division allows the organism to grow.
Cell division allows the organism to reproduce.
Cell division allows the organism to produce sex cells. .
Cell division allows the organism to repair damage to the cell
In meiotic division, homologous chromosomes separate during _____, while chromatids separate during _____.
meiosis I, meiosis II.
anaphase I, telophase II.
meiosis II, meiosis I.
anaphase II, anaphase I.
How do the chromosomes at the end of meiosis I differ compare with the chromosomes at the end of meiosis II?
Chromosomes have one chromatid at the end of both meiosis I and meiosis II.
Chromosomes have two chromatids at the end of both meiosis I and meiosis II.
Chromosomes have one chromatid at the end of meiosis I and two chromatids at the end of meiosis II.
Chromosomes have two chromatids at the end of meiosis I and one chromatid at the end of meiosis II.
When does the diploid cell become haploid?
After prophase I.
After meiosis I.
After prophase II
After meiosis II.
What is the difference between gamete and somatic cell?
A gamete does not contain chromosomes.
A gamete contains homologous chromosomes.
A gamete has the same number of chromosomes as a somatic cell.
A gamete has half the amount of genetic material as a somatic cell
If a sexually reproducing organism has 28 chromosomes in its body cells, how many chromosomes did it inherit from each parent?
7
16
14
28
Phenotype is
A. Genetic makeup
B. Determines genotype
C. Physical trait of an organism
D. Represented by two alleles
Mating an individual expressing a dominant phenotype, but which genotype is unknown, with an individual expressing the recessive phenotype is an example of
A. a heterozygous cross
B. an F1 cross
C. a parental cross
D. a test cross
A person who has at least two different alleles for a particular trait is said to be ___________ for the trait.
A. homozygous
B. heterozygous
C. recessive
D. dominant
In some rodents, the genes for wild type are dominant over the genes for white colour. If two wild type rodents were mated and their offspring consisted 75% wild type and 25% white colour, what is the genotype of the parents?
A. WW x WW
B. WW x ww
C. Ww x Ww
D. ww x ww
A test cross consists of a cross
A. between an offspring and its parent.
B. between two unknown forms to determine their genotypes
C. of an F1 hybrid to an individual that is homologous recessive.
D. of two pure-breeding forms to find out which form of a gene is dominant.
A homozygous dominant male with cleft chain (AA) and bushy eye brows (bb) has children with a woman who is heterozygous for both traits. What would be the expected phenotypic ratio of their children for these traits?
A. 100% cleft chin with bushy eyebrow
B. 25% cleft chin with busy eyebrow ; 75% cleft chin with fine eyebrow
C. 50% cleft chin with bushy eyebrow ; 50% cleft chain with fine eyebrow
D. 50% cleft chin with bushy eyebrow ; 50% without cleft chin with fine eyebrow
A test cross is carried out to distinguish between
A. two heterozygous phenotypes.
B. two homozygous recessive and heterozygous phenotypes.
C. a homozygous recessive and heterozygous phenotypes
D. a homozygous dominant and heterozygous phenotypes.
The term “dominant” means that
A. both alleles can be expressed in a hybrid.
B. all members of the F2 generation of a hybrid cross exhibit the dominant phenotype.
C. one allele can mask the expression of another in a hybrid
D. the dominant phenotype is more beneficial than the recessive phenotype.
The physical location of a particular gene on a chromosome is called
A. an allele
B. a locus
C. a trait
D. a characteristics
In human, assume that brown eyes trait is dominant and blue eyes trait is recessive. If two brown-eyed individuals have a child with blue eyes, that means
A. both parents are homozygous for brown eyes.
B. both parents are heterozygous for eye colour.
C. there is ¼ chance that their second child will have brown eyes.
D. there is ½ chance that their second child will have brown eyes.
