Answer: The probability of white puppies is Zero.
Genotype of the black dog is BB. This is a dominant trait, meaning that the presence of a single dominant allele ( Bb) will also give black color.
The genotype of white dog is bb. This is a recessive trait. It means that dog will express white color only if it is homozygous recessive ( bb).
When BB mates with bb, it results in all black puppies. This is so because the genotype of all puppies is Bb. Refer the Punnett square for this.
Thus, the probability that the match will produce white puppies is zero.
Answer:
The answer is 144g
Explanation:
This is because oxygen gas (O2) has a mass of 32g and you have 4.5 moles of O2, so you have to multiply 4.5 and 32.
In order to prepare n-butane from Wurtz reaction, firstly you should take two moles of bromo ethane (C2H5Br) and to react it with sodium in the presence of dry ether to get the product n-butane.
C2H5Br + 2Na + BrC2H5 ---(dry ether)-->C4H10 + 2NaBr