16. In plant cells, cytokinesis is completed by the formation of a(n) cell plate.
17. In which of the following cases would asexual reproduction be most advantageous for an organism?
Living in a stable environment with little variation
18. If a cell is exposed to a chemical that inhibits the production of spindle fibers as the cell is preparing for mitosis, what would MOST likely happen?
The cell would not divide
19. Which of the following statements lists the steps that occur in the Cell Cycle, in chronological order?
Sister chromatids align in the middle; cytoplasm pinches in to separate daughter cells
20. What is the BEST description of DFTD?
an infectious, cell-cycle disease
21. The disruption of which cell function leads to gene mutations that result in cancer?
DNA replication
22. During the time of normal cell activity, DNA exists in a loose, spaghetti-like form called _chromatin_.
23. The table below identifies three classes of genes that affect the cell cycle.
Proto-oncogenes become oncogenes.
adenine can form two hydrogen bonds with thymine. adenine-thymine and guanine-cytosine in DNA, and adenine-uracil and guanine-cytosine in RNA.
Answer:
See the answer below
Explanation:
Let the color of fire by the dragon be represented by B for the dominant allele (orange fire color) and b for the recessive allele (blue fire color).
Two dragons that are heterozygous were bred:
Bb x Bb
BB Bb Bb bb
Since orange fire color (B) is dominant over blue fire color (b):
BB and Bb = orange fire color
bb = blue fire color
<em>It means that 3/4 of the offspring from the parent will produce orange fire color while 1/4 will produce blue fire color.</em>
Answer:
Dehydration as a result of failure to ingest fluids or fluid losses from diarrhea are the most likely causes of prerenal azotemia, whereas sepsis, nephrotoxins, a congenital malformation, or poor perfusion may result in organ dysfunction.
Answer:
C. A1A2, A1A3
Explanation:
This question depicts a gene coding for coloration in a flowering plant. The gene is controlled by multiple alleles, three specifically. The alleles are labelled A1, A2, and A3, with each coding for it's own respective trait.
According to the question, A1 is dominant over A2 and A3 i.e. A1 will always mask the phenotypic expression of A2 and A3 and express itself. Also, A2 is dominant over A3 i.e. A2 will always mask the phenotypic expression of A3. This overall means that the trait encoded by allele A3 will only be expressed when the same alleles are present.
To the question; since A1 is dominant over the other two alleles (A2 and A3), it will be phenotypically expressed ahead of them in a heterozygous state with both alleles. That is, A1A2 genotype will give rise to a phenotype encoded by A1. Also, A1A3 will produce a phenotype encoded by A1. Hence, genotypes A1A2 and A1A3 will express the same phenotypes.
A2A2 and A3A3 will express different phenotypes since they are both in a same alleles condition. Likewise for A1A1 and A3A3. A2A3 and A1A3 genotypes will express different phenotypes encoded by A2 and A1 respectively since they are both dominant over A3.
