Answer:
True
Explanation:
Motivation can influence one’s perception by influencing focus and expectations. Got it right on the quiz.
Answer:
Post reproductive isolation → Hybrid sterility
Explanation:
The biological concept of species states that individuals of a species can not mate and reproduce with individuals of another species. But if they get to reproduce, the progeny will not be viable or fertile. There will not be any reproductive success.
There are different reproductive isolation mechanisms, which are barriers that inhibit or interrupt the genetic flow between different species.
Reproductive barriers are isolation mechanisms that prevent mating between two or more species. The prezygotic mechanism avoids fertilization between individuals of different species, while the postzygotic mechanism impedes the zygote to develop and reach the adult stage.
Postzygotic mechanisms or barriers include
- Hybrid inviability,
- Hybrid sterility,
- Hybrid decreased viability or fertility,
- Cytoplasmic interactions.
In the exposed example, it seems that the mountains separating the frogs´ populations made a place for the development of postzygotic barriers, specifically hybrid sterility. Frogs from one population get to mate and produce offspring with the frogs of the other population, but their progeny is sterile.
If<span> it is expressing the </span>recessive phenotype<span>, then </span>you know<span> right away what the</span>genotype<span> is. For </span>example<span>, for the </span>recessive<span> trait of green-colored peas versus the dominant trait yellow-colored peas. </span>If you<span> have green peas, then </span>you know<span> this plant has the homozygous </span>recessive genotype<span> for the pea color gene.</span>
All living beings are related in some way, and the proof is in our DNA. We share 98% of our DNA with chimpanzees, but we also share 20-something% of our DNA with lettuce