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tia_tia [17]
3 years ago
7

Evolution of octopus

Biology
1 answer:
11Alexandr11 [23.1K]3 years ago
3 0
Just when we thought octopuses couldn't be any weirder, it turns out that they and their cephalopod brethren evolve differently from nearly every other organism on the planet. ... When an organism changes in some fundamental way, it typically starts with a genetic mutation - a change to the DNA.


Octopuses are known to be highly intelligent for invertebrates and display an ability to solve complex problems. Until now the origins of cephalopods, which evolved from ancient marine molluscs with shells, have been shrouded in mystery.
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Which of the following is TRUE? Conjugation is a type of reproduction During fission, a conjugation tube forms between the donor
emmasim [6.3K]

Answer:

THE FOLLOWING ARE TRUE;

1. CONJUGATION IS A TYPE OF REPRODUCTION

2. CONJUGATION INCREASES THE GENETIC DIVERSITY OF BACTERIA

3. FISSION CAN OCCUR AS OFTEN AS ONCE EVERY HOUR UNDER IDEAL CONDITIONS

Explanation:

Conjugation is a form of reproduction in bacterial cells in which cells transfer DNA by direct contact with the recipient cell. The process is mediated by plasmids which are non-chromosomal DNA molecules. Conjugation occurs in one direction because the donor cell is the only one with the conjugate plasmids. The donor cell sends out its sex pilus and attaches it to the recipient cell creating a conjugal bridge from which genetic materials can be transferred between the two cells. The bacterial chromosomes can also be transferred through conjugation. Conjugation allows for genetic diversity in bacterial cells because the transfer is unilateral and non-identical daughter cells are produced.

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During fission a conjugation tube is not formed, conjugation tube is formed during conjugation type of reproduction of bacterial cells and also conjugation does not produce genetically identical daughter cells because wide varieties of DNA or genes can be transferred resulting in bacteria with traits of several different species.

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