Calculating ratios Calculate the ratio of the following
pairs of numbers. Give your
answers as whole-number ratios.
1. 500:250
2. 2020:1599
3. 675:1280
4. 25:499
5. 1327:1327

Free earlobes are determined by a
dominant allele. Attached earlobes
are determined by a recessive
allele. Tyler has free earlobes. His
father has free earlobes but his
mother has attached earlobes.
What is Tyler’s genotype?

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

Stage in which a typical star has completely stopped fusion