Answer:
The cross between rrff and RrFF does not produce any F1 offspring with the genotype, Rrff, therefore the probability that the F1 offspring will have red pear shaped fruit (Rrff) is: c. 0%
Given the following:
- Allele for red fruit color - (R) - dominant
- Allele for yellow fruit color - (r) - recessive
- Allele for round shaped fruit (F) - dominant
- Allele for pear shaped fruit (f) - dominant
A tomato plant that has a yellow pear shaped fruit will be - rrff
A tomato plant that is a heterozygous red fruit and is h0m0zygous round shaped fruit will be: RrFF
The cross between both parents (rrff × RrFF) is shown in the Punnett Square attached below.
F1 offspring that will have red pear shaped fruit will have the genotype as, Rrff.
Thus, the cross between rrff and RrFF does not produce any F1 offspring with the genotype, Rrff, therefore the probability that the F1 offspring will have red pear shaped fruit (Rrff) is: c. 0%
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Answer:
- Protozoans → would not have survived because they have no way to produce their own food → Heterotrophs
- Algae → would have survived without this food source → Heterotrophs
Explanation:
The protist kingdom is composed of two main groups. The principal difference between them is that algae can produce their own food, while protozoans need to ingest other organisms or organic molecules to survive.
- Algaes are autotroph
- Protozoans are heterotroph
<u>Protozoans</u>:
Microscopic unicellular organisms, eukaryotic and heterotrophs -predators or detritivores-. Most of them are aquatic free-living organisms, but some species are parasites. They feed on<u> bacteria</u>, other organic wastes, and other microscopic organisms. The phagocytosis process is normally used to ingest the food, invaginating their cell membrane.
<u>Algae</u>:
Eukaryotic micro- or macroscopic organisms. Autotroph and photosynthetic. They might be either unicellular or pluricellular. They use sunlight to synthesize organic matter from water, CO₂, and mineral salts. Unicellular ones can be free-living or associate with others to form colonies. They are part of the phytoplankton and are ingested by heterotrophic organisms. Pluricellular algae do not create real tissues but they compose a tale. The depth at which they inhabit depends on the pigments they produce. All of them inhabit fresh or sea waters.
A tolerance curve is the range of conditions which show how
an organism can live and function. It is a graph that will show the organism’s
activity in certain environmental conditions. There are different species all
over the world and each of them has certain environmental conditions which it
can best survive and reproduce. These are the conditions which the species has
best adapted. These conditions may include physical factors in the area such as
temperature, humidity, soil chemistry, pH, salinity and oxygen levels.
Matter cannot be generated or destroyed, according to the Law of Conservation of Matter. Because the same carbon atoms are recycled throughout the carbon cycle, it is an illustration of the Law.