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Biology
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Genetics: How does our genotype influence our phenotype?

The human genome consists of 46 chromosomes, specifically 44 autosomal chromosomes, similar in both males and females, and 2 gender specific sex chromosomes (X and Y). It has been known for many years,...

PV
Answered by Phoebe V. Biology tutor
4188 Views

Sexual Reproduction: How does a sperm and egg form a baby?

Once a month, following ripening, a single egg is released from a woman's ovaries during the menstrual cycle, with the hope of fertilisation. During the act of sexual reproduction, the father's sperm i...

PV
Answered by Phoebe V. Biology tutor
16356 Views

What is the difference between the humoral and cell-mediated immune repsonses?

The humoral repsonse removes the pathogenic microorganisms which don't enter the cells and requires antibodies produced by B lymphocyctes. Different B lymphocyte cells produce different antibodies, eac...

LC
Answered by Lily C. Biology tutor
38327 Views

When do mutations not cause a change in amino acid sequence?

The genetic code is degenerate- this means that amino acids can be coded for in more than one way. In an mRNA sequence coding for a protein, each amino acid in the protein is encoded b...

EP
Answered by Ellen P. Biology tutor
5832 Views

What is DNA replication and how does the cell cycle regulate cell division?

DNA replication is the production of two identical DNA strands from one original DNA molecule and is a nearly error-free process that occurs in all living organisms. This is because, in order for a cel...

AA
Answered by Azeem A. Biology tutor
10739 Views

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