Answer:
ZZ species will take more number of crosses to produce a recessive offspring.
Explanation:
Here Z seems to be the dominant allele. A species having ZZ or homozygous dominant genotype shall not express the recessive phenotype until unless it has both recessive allele and this is not possible as of now or is dependent on the genotype of mating species and the number of generations of development.
If ZZ mates with WW, the offspring in F1 generation will have genotype ZW
However, if the offspring in the F1 generation are crossed then in next generation we could see organism with recessive phenotype i,e WW
ZW*ZW
ZZ, ZW, ZW, WW
While in case of organism having ZW type genotype, recessive phenotype will occur in the first generation cross with the ZW.
Out of the options I would have to say Penetrating Keratoplasty, I am not sure
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Answer: The below are following hazards of four-legged animals and fish.
Explanation:
The four legged animals like cats, dogs, horse, and others need proper shelter, food, and care to survive.
They need to be taken outdoors for excretion, and walk.
The mating period is not fix and not easily done.
The four like fishes like turtle and squid are difficult to be handled in aquarium.
The four legged fishes do not come in fishing net during aquarium cleaning.
There are chances of being biten by four legged animals and their associated diseases like rabies.
These animals can lick the food we eat and contaminate the food.
The animal feces may produce air pollution.
The animal noise like dog bark can cause noise pollution. Thus can lead to problem of hypertension.
Answer:
Explanation:
Conserving the environment and preventing soil erosion, desertification, and flooding is essential. Unsustainable farming techniques not only impact natural ecosystems but also ultimately make farming itself impossible. ... Marine conservation is vital to protect human food supplies as well as marine anima
