If the haploid number for a plant species is 4, how many...

Question

If the haploid number for a plant species is 4, how many chromosomes are found in a member of the species that has one of the following characteristics? Explain your reasoning in each case.

diploidy

Accepted Answer

Welcome back, everyone. Here's our next problem. It says in a diploid organism, expression of deleterious mutations is suppressed because a mutations only affect haploid sets of chromosomes. B mutations are always dominant. C mutations are masked by the dominant ally on the other set of chromosomes or D all of the above. So we do have the potential for more than one correct answer. So let's recall in a diploid organism, we have two all for every gene since there are two sets of chromosomes. So when we think about deleterious mutations being their expression being suppressed, that's our key here because quite often mutations are recessive. You have a second all with no mutation that may be able to make up for or mask the effect of a deleterious mutation. So that's choice. C mutations are masked by the dominant allele on the other side of chromosomes. But I do have that option of all the above. So I'm going to mark this with a dot As correct but just make sure I don't have other correct answers. Choice. A says mutations only affect a haploid set of chromosomes. No, this is not correct because you can have a mutation to a chromosome and a diploid organism just you've got two alleles there. And so you could have a normal allele along with your mutated allele. So choice A is incorrect, which means we can also eliminate choice D all of the above. And then B says mutations are always dominant. Well, that's not correct. They obviously can be recessive and in fact, quite often, if not, most of the time are. So choice B is incorrect. So in a diploid organism, the expression of deleterious mutations is suppressed because choice C mutations are masked by the dominant all on the other set of chromosomes. See you in the next video.

If the haploid number for a plant species is 4, how many chromosomes are found in a member of the species that has one of the following characteristics? Explain your reasoning in each case.

diploidy

Key Concepts

Haploid and Diploid

Chromosome Number

Ploidy Levels

Watch next

If the haploid number for a plant species is 4, how many chromosomes are found in a member of the species that has one of the following characteristics? Explain your reasoning in each case.diploidy

Key Concepts

Haploid and Diploid

Chromosome Number

Ploidy Levels

Watch next

If the haploid number for a plant species is 4, how many chromosomes are found in a member of the species that has one of the following characteristics? Explain your reasoning in each case.

diploidy