Dolly the Sheep Cloning Process

Oviparous animals lay eggs, while viviparous animals give birth directly to babies.

Dogs produce more than one egg at a time, resulting in more puppies being born simultaneously. Humans usually produce one egg at a time, leading to the birth of one child at a time.

Twins can be born in humans when two eggs are produced and fertilized by two sperms, or when a single zygote splits and forms two embryos.

<p>The jelly cover around the frog’s egg helps to keep the eggs together, acts as a protective covering to prevent damage, and protects the eggs from injury.</p> Signup and view all the answers

<p>Frogs produce a large number of gametes to increase the chances of fertilisation due to threats like being eaten by fish or washed out by wind and rain.</p> Signup and view all the answers

<p>Cloning is the production of an exact copy of an animal through asexual reproduction, where the nucleus of a body cell is transferred into an empty egg cell to develop into an identical organism.</p> Signup and view all the answers

<p>The young one of a frog is called a larva because frogs undergo incomplete metamorphosis where they have only larval and adult stages without a pupal stage.</p> Signup and view all the answers

<p>Jelly in frog eggs serves a protective role by providing cushioning and insulation to the developing embryo, safeguarding it from external harm.</p> Signup and view all the answers

<p>Animal cloning has seen successes in producing genetically identical organisms but has also faced challenges such as health issues in clones, low success rates, and ethical concerns.</p> Signup and view all the answers

<p>The jelly-like substance protects the eggs from predators and provides structural support.</p> Signup and view all the answers

<p>Many clones often die due to genetic abnormalities and complications during the cloning process.</p> Signup and view all the answers

<p>Dolly the sheep was the first mammal cloned from an adult somatic cell, showcasing the potential of cloning technology.</p> Signup and view all the answers

<p>Cloning reduces genetic diversity by producing genetically identical individuals, which can be detrimental in the long run.</p> Signup and view all the answers

<p>Challenges include high rates of failure, genetic abnormalities, and ethical concerns surrounding animal welfare.</p> Signup and view all the answers

<p>One ethical dilemma is the welfare of cloned animals, as they may suffer from health issues and reduced quality of life.</p> Signup and view all the answers