Top answers

Biology
All levels

Mr & Mrs Smith have a child who has Cystic Fibrosis, yet they do not personally suffer from the condition. Explain, with the use of genetic crosses, how this is possible and, if they had another child, how likely the second child will have Cystic Fibrosis

As neither of the parents have the condition, it therefore is assumed to be a Homozygous Recessive condition, so requires both the recessive alleles for the disease to be present in an individual (eg ff)....

JN
Answered by Jack N. Biology tutor
4146 Views

Name 3 things that can affect the activity of enzymes

1) Temperature: increasing the temperature increases the rate of reaction, however this can only happen to a certain point as beyond each enzyme's optimum temperature they get denatured (...

JC
Answered by Jessica C. Biology tutor
2891 Views

Describe the four stages of mitosis

There are four stages of mitosis:
prophase, metaphase, anaphase and telophase.

1) Prophase
Chromatin into chromoso...

JC
Answered by Jessica C. Biology tutor
456919 Views

Discuss the differences between DNA and RNA. (4 pts)

Although DNA and RNA are practically identical, there are a few key differences between the two molecules. Function: DNA stores long-term genetic information and transmits genetic information to ma...

SK
Answered by Sophie K. Biology tutor
1740 Views

How can you determine what the direction of the shift is in the Bohr effect?

Haemoglobin acts as the Oxygen transportation system for the body. It is comprised of 4 polypeptide chains (quaternary protein structure) and each chain has an attached haem group. Each haem group allows ...

CL
Answered by Charlotte L. Biology tutor
2834 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning