Example(s) of environmental determination of | vedclass

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(D) Environmental determination of sex refers to the process where environmental factors like temperature or chemical signals influence the sex of an

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All of these

Vedclass · Answer

(D) Environmental determination of sex refers to the process where environmental factors like temperature or chemical signals influence the sex of an organism.In $Bonellia$ (a marine worm),the sex of the larva is determined by its environment. If a larva settles alone,it develops into a large $(2.5 \ cm)$ female. If it lands on or near an existing female,chemical substances secreted by the female cause the larva to develop into a tiny $(1.3 \ cm)$ male.In many reptiles like turtles and alligators,the incubation temperature of the eggs determines the sex of the offspring. Generally,a temperature below $28^{\circ}C$ produces more males,a temperature above $33^{\circ}C$ produces more females,and a temperature between $28^{\circ}C$ and $33^{\circ}C$ produces both males and females in equal proportions.Therefore,all the given examples exhibit environmental sex determination.

Example$(s)$ of environmental determination of sex is/are:

Similar Questions

Gynandromorphs develop in Drosophila when the two cells in the two-celled proembryo have one of the following chromosomal sets:

If an $X$ chromosome-containing sperm enters an $X$ chromosome-containing ovum,then what is produced?

The initial experiments for the genetic basis of sex determination were performed on $........$.

In chickens,which of the following is responsible for sex determination?

$A$: $XO$ type sex determination is found in a large number of insects.
$R$: Some of the sperms bear the $X$-chromosome,whereas some do not.

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