Organisms must have variation within a population in order for natural selection to occur. Which situation is an example of this variation?

1. A frog living in a pond is eaten by a predator, while others in the same population survive.

2. A snake living in a desert produces more offspring than other snakes in the same population.

3. Some rabbits living in a forest have short, spotted ears, while others have long white ears.

4. Some birds living in a grassland eat less than other birds who eat the same food.

How does using straws hurt the sea turtles?

Approximately 90% of all cases of polycystic kidney disease are inherited in an autosomal dominant fashion. the disease is typically related to mutations to genes (pkd1 and pkd2). pkd genes can be found on chromosome 16. the disease occurs in approximately 1: 800 to 1: 1000 people. here is a hypothetical example. the dominant allele d will cause the development of pkd. the recessive allele is known as d. what genotypes would correspond to suffering from pkd? dd, dd what genotypes would correspond to being normal (not suffering from pkd)? dd consider that 1: 1,000 people have pkd in your population of 325million. consider that pkd is inherited in an autosomal dominant fashion. show you math for all of the following questions: what is the genotypic frequency for dd? what is the genotypic frequency for dd? what is the genotypic frequency for dd? what is p? what is q? how many people in your population would have pkd?

When plants use sunlight to make food, the energy of sunlight is