Populations, Evolutions & Genetics Random Retrieval

What term do we use to describe lichen and mosses in succession?

What is the biological meaning of succession?

Which method would you use to see if there is a difference between the percentage cover of moss on the north face compared to the south face of tree trunks?

You can also use a transect to sample a population. When should a transect be used?

What is the word used to describe 'The specific role of a species within its habitat'?

What type of speciation is caused by a physical barrier between two populations such as a body of water?

Speciation is when a new species arises from another: they can no longer produce fertile offspring because their DNA is no longer compatible. What term describes this inability between two populations to reproduce successfully?

Natural Selection means that over time the frequency of beneficial alleles in a population will do what?

In the creation of gametes, which process mixes up the alleles?

Which of these is a source of variation?

Which of the following is a cause of variation?

In peppered moths, having light coloured wings is dominant. In Sheffield (an industrial northern town in the UK) a sample of moths was taken. The numbers collected were 73 light coloured , and 326 dark coloured. How many are heterozygotes?

In peppered moths, having light coloured wings is dominant. In Sheffield (an industrial northern town in the UK) a sample of moths was taken. The numbers collected were 73 light coloured , and 326 dark coloured. What proportion of all alleles are for the dark one?

An Ethiopian breed of cattle has low whey protein in its milk. This is controlled by a dominant allele (M). If 6 % of the herd have low whey protein, what proportion are heterozygotes?

Drosophila is a type of fruit fly which is used in many genetic experiments. It has two alleles for eye colour : Red ( R) and White (r). If 0.8 of the alleles are red, how many are white?

What does 'p' represent ?

The Hardy Weinberg principle only applies to a population that is or has ____.

The actual ratio of phenotypes after several matings between the above two hamsters was more similar to 6:1:1:6. How are the alleles linked?

Marfan Syndrome ( TGF Beta) is dominant (T) to the healthy recessive allele(t) . Having a V shaped hairline (V) is dominant to having a straight hairline (v). What proportion of the offspring of a heterozygous father (TtVv) and a heterozygous mother (TtVv) will be health and have a V shaped hair-line ?

In guinea pigs, Short hair (S) is dominant to long hair (s). In a monohybrid cross between a heterozygous mother, with a heterozygous father, what ratio of long hair to short hair will the offspring have ?