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In a population of 1000 lemmings there are two alleles for skin colour, the dominant colour being cream (C) and the recessive being white (c). 350 individuals have white skin. Use Hardy-Weinberg to predict the number of homozygous recessive individuals.

Hardy-Weinberg Principle states that in a population of randomly mating individuals:
p + q = 1
p2+2pq+q2=1
White fur = homozygous recessive = q2 = 350/100 =...

Answered by Igbunu O. Biology tutor
1912 Views

What is the difference between a phagocyte and a lymphocyte?

One of the first cells to respond to an infection will be a phagocyteThese migrate to the pathogen (foreign object with potential to cause disease)They engulf the phagocyte in a process known as phagocyto...

Answered by Omar B. Biology tutor
2509 Views

Why does the breathing rate not return to normal after vigorous exercise?

During vigorous exercise, muscles are not supplied with enough oxygen. This means that cells have to respire anaerobically. Anaerobic respiration involves no oxygen. This leads to a build-up of lactic aci...

Answered by Sadia Halimah A. Biology tutor
19634 Views

Describe the process of mitosis

Mitosis occurs when a eukaryotic cell has exited interphaseIt occurs in 4 stages:
Prophase: The spindle fibres appear in the cell, the chromosomes condense and the nuclear membrane of the nucleus dis...

Answered by Aoife M. Biology tutor
2405 Views

What is hCG and what does it do?

human chorionic gonadotropin (hCG) is a hormone which is closely associated with the early stages of pregnancy. It is produced by the blastocyst once it has implanted int...

Answered by Christopher A. Biology tutor
1952 Views

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