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Why is recycling of electron carriers and ATP is important for the cell
Does it matter what species of plants/crops are being used for genetic modification of foods? In other words, should GMO foods be allowed only for certain species?
In peas, a gene for tall plants (T) is dominant over its allele for short plants (t). The gene for smooth peas (S) is dominant over its allele for wrinkled peas (s). The genes are not linked.
TtSs x TtSs
ttSs x Ttss
TtsSS x ttss
Ttss x ttss
Paleontologists have discovered the fossilized remains of ancestors of whales in Pakistan. These remains were found far from any large body of water. What can you infer from this observation?
1.How many number of sternebtrae in pigs?
2.Number of sternebrae in ruminants?
3. Number of true ribs in chicken?
Match the following using the answers below,
4. Support and nourish the developing sperm
5.A duct system for transporting sperms from the site of production
6.Involved in the regulation testicular temperature.
7.Failure of one or both testicles to descend into the scrotum .
8. Sperm producing centre
Possible answers. A.Cryptochid, B. Epididymis, C Tunica dartos, D.Seminiferous tubule, E. Sertoli cells
When living pancreatic cells were placed in a solution of a red stain called neutral red, the cytoplasm became red. The cells were then removed from the solution of neutral red The red stain in the cytoplasm moved into vesicles, which were exported from the cell, eventually leaving the cell colourless.
Which transport mechanisms could explain how the red stain entered and I
A active transport and facilitated diffusion
b diffusion and exocytosis
C facilitated diffusion and endocytosis
D osmosis and exocytosis
In peas, a gene for tall plants (T) is dominant over its allele for short plants (t). The gene for smooth peas (S) is dominant over its allele for wrinkled peas (s). The genes are not linked. Determine both phenotypic and genotypic ratios for the results of each of the following crosses:
In general, what happens during an oxidation-reduction reaction between two molecules?
In a pea plant that breeds true for tall, what possible gametes can be produced? Use the symbol D for tall, d for dwarf.
A. In a pea plant that breeds true for dwarf, what possible gametes will be produced?
B. What will be the genotype of F1 offspring from a cross between these two types?
C. Assuming that the allele for tall is dominant, what will be the phenotype of F1
offspring from a cross between these two types?
E. What will be the probable distribution of traits in the F2 generation? (Illustrate with a Punnett square).
What are the factors affecting the Hardy-Weinberg equilibrium?
