When you cross two hybrids, the results always come in a 3:1 ratio as follows:
3 is the inheritance of at least 1 dominant allele
1 is the inheritance of two recessive alleles
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T | TT | Tt |
t |<u> Tt | tt </u>|
Three out of 4 boxes have offspring that express the dominant trait (tall plants) and 1 out of 4 boxes expresses only the recessive trait (short plants).
Hope this helps! :)
Answer:
Seminal vesicles
Explanation:
The seminal vesicles also called vesicular glands are found only in some mammals. Those are paired tubular glands within the pelvis with the function to secrete fluid that will become the semen.
Male cat does not have a seminal vesicle, but do have other accessory glands that secrete the seminal fluid such as prostate gland and Cowper´s (bulbourethral) glands.
Answer:
<em>In a population, natural selection acts on phenotype of individuals.</em>
Explanation:
Natural selection tends to favour those organisms of a population which carry traits that allow them to be better adapted to the environment and these traits are passed on to their offsprings. Natural selection tends to act on the phenotype of the population whereas evolution is the phenomenon which changes the allele frequencies. Natural selection acts on individual organisms of a population whereas the change in populations, on the whole, arises due to evolution.
Viruses are actually smaller than bacteria but they're not bacteria. So D is wrong.
Viruses don't grow and aren't made of cells, and despite being able to reproduce, they're not living. So C is correct.
As for the other two, I'm not entirely sure what they mean but C is the answer.
Tell me the question clearly I cannot understand
