To determine the reason for the fish death, do the following:
1. Test the water for the presence of organic substances that may be poisonous to the fish.
2. Test the dissolved oxygen concentration of the lake at different locations and at different depths.
3. Perform full toxicological examination of the lake to determine if any pollutant or poisonous chemical is present in the lake.<span />
Answer: A.
Explanation: Methane will heat up the atmosphere much more than carbon dioxide will.
The feature hair type is coded by a diallelic gene and expresses incomplete dominance. The cross of two wavy haired individuals will produce 25% curly-haired children, 50% wavy-haired and 25% straight-haired children.
<h3>
What is a Punnett square?</h3>
The Punnett square is a cross representation that shows all possible combinations between the parental gametes.
It shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.
Let us say that we are analyzing the feature hair type.
Hair type is coded by a diallelic gene that expresses incomplete dominance.
- The dominant allele C codes for curly
- The recessive allele c codes for straight hair
- The combination of both alleles in heter0zyg0us state codes for wavy hair.
Let us say that both parents have wavy hair.
Cross:
Parentals) Cc x Cc
Gametes) C c C c
Punnett square) C c
C CC Cc
c Cc cc
F1)
<u>Genotype</u>:
1/4 = 25% of the progeny will be h0mzyg0us dominant, CC.
2/4 = 1/2 = 50% of the progeny will be heter0zyg0us, Cc.
1/4 = 25% of the progeny is expected to be h0m0zyg0us recessive, cc.
<u>Phenotype</u>
1/4 = 25% of the progeny will have curly hair (CC).
2/4 = 1/2 = 50% of the progeny will have wavy hair (Cc).
1/4 = 25% of the progeny is expected to have straight hair (cc).
You will learn more about the Punnett square at
brainly.com/question/25357981
Answer:
See the answer below
Explanation:
<em>The conclusion that Avery, Macleod, and McCarty would have made assuming that samples of heat-killed bacteria treated with RNase and DNase transformed bacteria, but samples treated with protease did not would be that protein is responsible for the transformation of the non-virulent bacterium strain to a virulent one.</em>
<u>According to the findings of the 3 researchers, heat-killed virulent strain of </u><u><em>Streptococcus pneumoniae </em></u><u>transformed non-virulent strain of the same species into being virulent. They were able to discover that the molecule responsible for this transformation was DNA.</u>
If the heat-killed virulent strain had been treated with RNase and DNase, this would have degraded RNA and DNA in the heat-killed cells respectively, leaving only protein as the carrier of the virulence factor. Confirmation of the transforming attribute of the protein can be further be confirmed by treating the heat-killed mixture with protease, a protein degrading enzyme.
