ENVS 2210 midterm 2 : Questions & Answers: Latest Updated Guide Solution

What are genes? (Ans- fragments of DNA that codes for the synthesis of a protein, genes come in pairs What are alleles? (Ans- paired genes located in the same locus of homo chromosomes The sex locus is found on (Ans- chromosome 3 - in bees sex is determined by a gene not by a chromosome Drones are (Ans- haploid, have one set of chromosomes The gene that determines the sex of a bee has how many alleles? (Ans- more than 15, although only 2 of them are expressed in individual females Sex gene in bees has more than 15 alleles _______ carried by males and ______ carried by females (Ans- one, twoWhat constitutes a diploid drone and what happens to them? (Ans- when two alleles of the sex gene are homozygous, diploid drones are eaten up by colony workers What constitutes a female? (Ans- when the two alleles of the sex gene are different What is the % brood viability? (2 sex alleles? 5 sex alleles?) (Ans- 50% - half of the diploid products are heterozygous and give rise to females and the other half are homozygotes that result in males that are eaten by workers 5 - 87.5% are females and 12.5% are male homozygotes The more sex alleles the ______ brood viability (Ans- higherWhy is inbreeding bad for bees? (Ans- reduces number of sex alleles which may result in scattered brood pattern What is a subfamily or patriline