(03.01 mc)
during cell division, centromeres have separated, and chromatids are pulled apart, becoming chromosomes. what happens after the chromosomes are pulled to opposite ends of the cell? (2 points)

prophase
anaphase
metaphase
telophase
2. (03.01 hc)
which of the following correctly predicts what would happen to a body cell if its processes were interrupted during mitosis? (2 points)

cells would begin dividing uncontrollably.
chromosomes would not separate into two nuclei.
cytokinesis would occur more rapidly.
the cell would not be able to grow any further.
3. (03.02 mc)
during meiosis, sister chromatids are separated and move toward opposite ends of the cell as the centromeres that hold them separate. which of the following processes will begin next? (2 points)

prophase i
metaphase ii
anaphase i
telophase ii
4. (03.02 mc)
a fox's diploid number of chromosomes is 36. how would the number of chromosomes in the fox's body cells compare to the number of chromosomes in its gametes? (2 points)

its body cells and gametes would both have 18 chromosomes.
its body cells and gametes would both have 36 chromosomes.
its body cells would have 18 chromosomes, and its gametes would have 36 chromosomes.
its body cells would have 36 chromosomes, and its gametes would have 18 chromosomes.
5. (03.02 hc)
some organisms undergo asexual reproduction through mitosis, while others reproduce sexually, and their cells undergo meiosis to produce gametes. if there were drastic changes in temperature in an ecosystem, which process do you predict would be most beneficial to a species? (2 points)

mitosis: it causes genetic mutations, which may be favorable to the species.
meiosis: it increases genetic variation, which ensure the species will survive.
meiosis: it produces more daughter cells, which increases the population of the species.
mitosis: it produces identical offspring, which increases genetic variation.
6. (03.03 mc)
in pea plants, the allele for yellow seeds is dominant to the allele for green seeds. if a plant that has heterozygous yellow seed is crossed with one that has only homozygous green seeds, what percent of their first generation offspring would you expect to have green seeds? (2 points)

50 percent
100 percent
0 percent
25 percent
7. (03.03 hc)
in fruit flies, the allele for white eyes is recessive to the allele for red eyes. in a generation of fruit flies, 45 males with white eyes, 46 females with white eyes, 44 males with red eyes, and 47 females with red eyes are produced. which of the following is the best conclusion you can make about the parents of this generation? (2 points)

one parent was heterozygous for eye color and the other was homozygous with red eyes.
both parents were homozygous with red eyes.
one parent had white eyes and the other was heterozygous for eye color.
both parents were heterozygous for eye color.
8. (03.03 mc)
codominance is a form of inheritance in which two different alleles for a gene are both expressed, and neither allele is dominant over the other. one example of codominance is blood type in humans; the alleles for type a blood and type b blood are codominant. if a man who is homozygous for type a blood and a woman who is homozygous for type b blood have children, what would you expect to find in the children? (2 points)

half will have type a and half will have type b blood.
the children will all have type b blood.
the children will all have type ab blood.
the children will all have type a blood.
9. (03.04 mc)
the pedigree chart below shows the individuals in a family who exhibit a certain trait. based on the information in the chart, what are the chances that a second child born to couple 4-5 in the third generation will show the trait? (2 points)

a diagram of a pedigree chart. at the top of the chart are two individuals: one indicated by a green circle and one by a green square. at the next level down, the green circle is paired with a black square and the green square is paired with a black circle. from the green circle/black square pairing, there are three offspring: a green circle, a green square, and a black square. from the green square/black circle pairing, there are eight offspring: three black circles and four black squares. two of the black squares are identical twins. one of the black circles is paired with another black square. this pairing produced one green circle.

25 percent
50 percent
100 percent
0 percent