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One homozygous strain of silkworm lays white eggs, and another lays black eggs. The F1 offspring of a cross of white and black egg laying silkworms are all found to lay white eggs. Among the F2 progeny, 50 silkworms were found to lay white eggs, 10 laid black eggs and four laid pink eggs.
i. Explain the mode of inheritance of egg color.ii. What are the genotypes of the parents?iii. What are the genotype (s) of the F1?iv. Explain the ratios obtained in the F2 generation
In a primrose variety there is one gene controlling color of the flower. 2-alleles of this gene occur red and white.
Which of the following tumors can be surgically resected with no residual consequences?
Both directional and stabilizing selection affect the additive variance in quantitative traits. Given their effects, how much additive genetic variance do we expect to find in traits that affect fitness?
explain short-chain or long chain fatty acids. When bacteria growing at 20 degree celsius are warmed to 30 degree celsius, are they more likely to synthesize membrane lipids with.
Comb shape in chickens represents a classic example of gene interaction. 2-gene pairs interact to influence shape of the comb. The genes for rose com and pea comb together produce walnut comb.
Specify whether the taste of fresh water surprised you or not? Explain if your perception of coarseness change or not?
A typical bacterial flagellum is about 20 nm wide. About how many times must the diameter of the flagellum be increased to make visible using a bright field microscope?
Discuss how does the genetic variation differ in "Parent" beakers and the respective derivative beakers? Meaning was the gene pool different in either Beaker #1 or Beaker #2 compared to the parent population?
If you wanted to measure the absorbance of hemoglobin, the red pigment of your red blood cell, what wavelength would be best? Explain why.
Would you expect any differences in the sizes of the inserts in the two libraries? in brief explain.
Assume your TA gives you a bacterial culture and claims there are 4.8 x 107 bacteria/mL in the culture. To check up on her, you prepare serial dilutions of 10-4 - 10-7.
Create and observe bacteria in petri dishes for my own learning experience. I thought I was being sufficiently sanitary while heating the agar and pouring it into the plates.
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