Hello there Shahnaaz!
Your answer is B. Nucleus
The Nucleus directs a cells activities and is often deemed the "brain" of a cell.
Hope this helped you and have a wonderful day!
~Rose
DNA replication occurs in the S phase. After that is G2, which is growth and final preparations for division. Chromosomes are checked for errors and repairs are made if needed. Essentially, the cell prepares for division.
Answer:
It makes the dogs at a higher risk of health issues later on in life.
Explanation:
The dogs are usually only bred for looks. Their health is not taken into consideration.
50 percent of the offspring would be expected to have the ability to roll their tongues If a heterozygous male is crossed with a homozygous recessive female.
Explanation:
Information given:
the ability to roll tongue is dominant, the genotype would be RR, Rr
the inability to roll tongue is recessive trait the genotype = rr
Given that heterozygous male is crossed with homozygous recessive female, the genotype is
Rr X rr
Punnet square shows that:
R r
r Rr rr
r Rr rr The genotype ratio is 1:1
phenotype ratio is 1:1
There are chances of 50 % offspring having the ability to roll their tongues as they are heterozygous and have the dominant allele for rolling of tongues.
