Mendel was able to study seven traits in all the pea plants in each generation. which of his hypotheses allowed him to analyze each trait separately? a)-if two different alleles for a gene occur together, one of the alleles may be expressed while the other is hidden. b)-when gametes are formed, each gamete carries only one allele for the gene. c)-there are alternate versions of a alleles called genes. d)-for each inherited trait, there is only one copy of the gene that codes for that trait. the answer is: is b-when gametes are formed, each gamete carries only one allele for the gene. i just took the test and got it right

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the