https://opentextbc.ca/biology/chapter/13-1-how-animals-reproduce/

Some animals produce offspring through asexual reproduction while other animals ... Species that reproduce sexually (and have separate sexes) must maintain two .... Nearly all fish spawn, as do crustaceans (such as crabs and shrimp), ...

https://en.wikipedia.org/wiki/Sexual_reproduction

Sexual reproduction is a type of life cycle where generations alternate between cells with a .... In placental mammals, offspring are born as juveniles: complete animals with the sex organs present although not reproductively functional. ... One fish species does not reproduce by sexual reproduction but uses sex to produce ...

https://science.jrank.org/pages/6100/Sexual-Reproduction-Animal-reproduction.html

During sexual reproduction in animals, a haploid sperm and unites with a haploid ... such as the duckbill platypus and the echidna, mammals do not lay eggs.

https://socratic.org/questions/how-do-animals-reproduce-sexually

Jun 28, 2018 ... It depends on the animal, but the fundamental aspect of sexual reproduction is that genetic information from each parent must be joined ...

https://courses.lumenlearning.com/boundless-biology/chapter/reproduction-methods/

Animal reproduction is essential to the survival of a species; it can occur ... Organisms that reproduce sexually yield a smaller number of offspring, but ... whereas in coral budding, the bud does not detach and multiplies as part of a new colony.

http://www.newworldencyclopedia.org/entry/Sexual_reproduction

Feb 6, 2012 ... Among animals, nearly all species practice sexual reproduction. .... sex organs, the male does have two testes which become hundreds of ...

https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Book%3A_Concepts_in_Biology_(OpenStax)/18%3A_Animal_Reproduction_and_Development/18.1%3A_How_Animals_Reproduce

Some animals produce offspring through asexual reproduction while other animals ... Species that reproduce sexually (and have separate sexes) must maintain two .... Nearly all fish spawn, as do crustaceans (such as crabs and shrimp), ...

https://www.nature.com/scitable/knowledge/library/mating-systems-in-sexual-animals-83033427

In contrast, due to meiosis, diploid sexually reproducing animals have two copies ... Those males that do mate tend to mate with many females-thus a few males ...

http://www.bbc.com/earth/story/20160704-the-real-reasons-why-we-have-sex

Jul 4, 2016 ... The dawn of sexual reproduction has always been a puzzle for scientists. ... most plants and even some animals do at least some of the time.

https://ncseagrant.ncsu.edu/coastwatch/previous-issues/2017-2/summer-2017/everything-you-always-wanted-to-know-about-sex-in-the-sea/

Let's think about the last one: How do animals in marine environments procreate ? ... Most marine and estuarine animals reproduce sexually — including oysters,  ...