Question

molecular genetics research teams can study the genomes of individuals in a population, and look for genes that contribute to characters such as beak shape. which of the following predictions are appropriate for this population of finches? there may be more than one appropriate prediction.

1- in population, there are multiple alleles for a gene that could affect beak shape.

2- in population, there are multiple genes that affect beak shape.

3- some individuals will have only one type of allele for the gene that affect beak shape.

4- some individuals will have two different alleles of a gene that affect beak shape.

5- If we look for the alleles for the gene that causes beaks to be large, we won't find it in any birds that were alive befor the drought, but we will find it in post-drought birds

Answer 1

Inital 4 statements are correct regarding prediction of the polulation of finches.

Explanation

In a population break shape can be regulated by having multiple gene ( polygenic inheritance) or may be regulated by multiple alleles of a gene.

Although in population tou can find multiple gebe and allele affecting a trait. But in an individual a single gene and two allele is responsible for trait. Alleles may be heterozygous or may be homozygous.

Statement 5 is wrong , according to this allels responsible for large break we will wind only after drought. All type of allels present in population, but which alleles express in population depend on the condition which they experienced.