Biology, asked by mananverma9876, 1 year ago

Name the phenomenon that governs the following: - 5
i) Green beetles living in green bushes are not eaten by the crows.
ii) Number of blue beetles in green bushes increases, only because the red beetles living there were trampled by a
herd of elephants.
iii) No ‘medium height plants’ are obtained in F1 generation, upon crossing pure tall and dwarf pea plants.
iv) Tails of mice were surgically removed for several generations; still mice had tails in the following generations.
v) A migrant beetle reproduces with the local population; as a result genes of migrant beetle enter the new
population.

Answers

Answered by officialsinghrs
9

Hey mate ! Here's your answer !


a) It can be both natural selection (that is survival of green beetles only while other coloured beetles couldn't stay alive because of predators) & adaptation (all the beetles adapted to change their colour into green for survival).


b) It's called genetic drift, where to maintain a balance in population a part of it becomes more prone to danger while other gain advantage and survive.


c) The dominance of T (tall genotype) over t (short genotype) results Tt genetic coded plants to be tall and not medium.


d) Acquired trait is the correct answer. Though this is not proved yet as the change occurs somatically and not in chromosomal level, these characteristics don't go to the next generation.


e) Gene flow is the correct answer as the mix of two genotypes occur from one place to other improvising the genetic orientation of the parent population.






mananverma9876: listen plz give me this answer
mananverma9876: The electronic configuration of an element X is 2 8 6 to which group and period of modern periodic table does X belong state its valency and justify your answer in each case
officialsinghrs: The element has 4 shells which means that it actually belongs under the 4th period.

The element also consists of only 2 valence electrons meaning that it actually belongs in the 2nd group.

As far as valency goes,the element has a valency of 2 because it can lose 2 of its electrons which can let it obtain the configuration of noble gas
mananverma9876: thx
BrainyBeast: hey he was wrong
BrainyBeast: his all 3 wrong
BrainyBeast: 3 shells therefore 3rd period
BrainyBeast: group 16 as 6 valence electrons
BrainyBeast: valency - 2 because it will gain
BrainyBeast: hope its helpful follow me
Answered by anjlena
3
1st
camouflage
....


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anjlena: refr above
mananverma9876: thx
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