Explain the effects of a somatic mutation on the individuals and their offspring if the mutation is recessive or dominant
What will be an ideal response?
Somatic cell mutations can only affect the individuals they occur in and will not affect their offspring. Whether or not the mutation affects the individuals can vary depending upon whether or not the mutation is recessive or dominant. If the mutation is recessive, then it is less likely to affect the individuals unless the wild-type allele also becomes mutated or if the recessive mutation occurs on a male's X-chromosome. If the mutation is dominant, then it is more likely to affect the individuals. However, even dominant mutations' phenotypes may have less impact due to the thousands of other cells in the tissue that remain unmutated. It should be noted that an accumulation of several mutations in a single cell could lead to diseases such as cancer.
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The immune system ____
a. works by attacking anything recognized as foreign b. plays no role in fighting cancer c. often accelerates development of malignant cancers d. works by turning off specific genes in an individual's DNA e. is highly resistant to genetic modification
Explain why individuals with type O blood can donate to any other blood type, and why individuals with type AB blood can accept blood of any blood type
What will be an ideal response?
Which of the following tropisms is the
response to touch in plants?
a. gravitropism b. phototropism c. thigmotropism d. mechanotropism e. chemotropism
In animals that undergo indirect development, the newborn has a similar body structure to that of the adult
Indicate whether the statement is true or false