Answer:As scientific understanding of genetics improved, it became clear that animals inherit traits from their parents. Traits are passed on through genes, which are small bits of information in your cells. ... The goal of their breeding program then becomes to produce animals that have these good traits.
Hope this helps!- Autumn♥
Hi there! I just finished studying the human body and so I can tell you with confidence that the Respiratory System is responsible for the exchange of oxygen and carbon dioxide. If you need more proof, the word Respiration itself<span> means</span> the action of breathing.
Answer:
Tongue-rolling is dominant, and both parents were heterozygous
Explanation:
Tongue rolling is a type of variation in human beings. When allelic genes are not identical as in Tt, the condition is referred to as heterozygous. An individual with such a genotypic condition is referred to as a heterozygote.
Both parents had a genotype of Tt and they could roll their tongues because T is dominant over the t gene.
T t
T TT Tt
t Tt tt
TT : Tt : tt
1 : 2 : 1
In a heterozygous parent Tt, the chance of producing T gamete from both parents is each 1/2 each. Similarly the chance of forming t gamete is 1/2. Therefore, the chance of gamete T and t fusing to get genotype Tt is 1/2*1/2=1/4.
The ratios of phenotypes are 3/4 will be able to roll the tongue and 1/4 will not be able to roll the tongue.
The mode of inheritance was monohybrid inheritance since one characteristic like tongue-rolling is controlled by a single pair of hereditary factors contributed by both parents.
Higher animals and plants most likely have oogametes
To protect it from the acids
