<span>deoxyribosec is correct. hope it helps</span>
Answer:
An impulse travels from one nerve to another by release & subsequent diffusion of chemicals called neurotransmitters across a very small gap between neurons, called a synapse.
Explanation:
So in this case it would be transmitted via the cell membrane (Synapse)
Answer:
When two organisms share a common ancestor, their genetic code has to be similar. ... For example, all life on earth shares the genes responsible for essential biological processes such as respiration which means that all organisms evolved from a common ancestor called Last Universal Common Ancestor(LUCA).
According to the rules of human genetics, if Betsy and Rudolph have a calf it will have a black nose.
What are alleles?
- The substance that is stably passed down, unchanged, from parent to offspring through the gametes, over successive generations is called as ‘factors’ now called as genes.
- Genes, therefore, are the units of inheritance. They contain the information that is required to express a particular trait in an organism. Genes which code for a pair of contrasting traits are known as alleles, i.e., they are slightly different forms of the same gene.
- Since Betsy has a dominant trait and doesn't carry any recessive gene and Rudolf has a recessive trait, their phenotypes will be NN and nn respectively.
- Mendel proposed that in a pair of dissimilar factors, one dominates the other and hence is called the dominant factor while the other factor is recessive. In this case N (for black nose) is dominant over n (for red nose), that is recessive.
- From the punnet square it is seen that the all the fertilisations lead to individuals having 'black nose' only and none of them will have 'red nose'.
- Within the genotypic pair Nn only one character N 'black nose' is expressed. Hence the character N or ‘black nose’ is said to dominate over the other allele n or ‘red nose’ character.
- It is thus due to this dominance of one character over the other that all the calf will have 'black nose' with Nn as the genotype.
To learn more about punnet square:
brainly.com/question/3522181
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