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Life cycle of a fern scenario: Hybrid 1- the sperm in the antheridium has 8 chromosomes; dominant gene 'A' is on one of the chromosomes that produce large sporophyte fronds. Hybrid 2 - egg has 8 chromosomes with recessive gene 'a' that produces small sporophyte fronds. If fertilization took place between both hybrids, how many chromosomes would there be and what would be the genotypes of resulting structures in the fern's life cycle?
If cell surface receptors can rapidly signal to the nucleus by activating latent gene regulatory proteins.
Explain the polymerase chain reaction process. Use terms primer, template, DNA, nucleotides, and DNA polymerase.
There is a general agreement that life should have evolved in the oceans originally and only much later invaded land. What factors of the physical environment on the early and evolving Earth support these ideas? Changes in which of these factors were..
A generalized transducing phage first infects a bacterial donor of genotype his +, trp +, and rif +. After lysis of the bacterial donor, a bacterial recipient of genotype
Determine which type of chromosome structure is characterized by the centromere position very near the end of the chromosome with the short arm composed of highly repetitive DNA?
The group of molecular biologists is trying to synthesize a new artificial compound to mimic the effects of a known hormone that influences sexual behaviour. They have turned to you for advice.
determine the number of significant figer in the following measurment [ 12.3 ml and 2.3 g and 5.877 micrometer] then round the number 56.877 to the following number of significant figures [4 and 3 and 2]?
Assume two samples of water are taken just under the surface on a lake, one sample in the early morning, and the other in the late afternoon. Harriet had liposuction several years ago, but has since gained back all the weight lost through the procedu..
What is the driving force for this movement of gas (think concentraction gradient)? Finally, how does carbon monoxide disrupt the process of oxygen trans port?
Which of the following statements about eukaryotic RNA is TRUE?
Discuss similarities and differences gram-positive and gram-negative cell walls with regard to sensitivity to antimicrobial agents, resistance to phagocytosis.
Angel is a biologist studying Lake Ecosystem in which leaf-eating insects are consumed by fish, which are consumed by snakes, which are consumed by hawks. In this case, how would you categorize a fish.
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