________ chromosomes pair during ________ of meiosis
Fill in the blank with correct word.
Answer: Homologous; prophase I
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What will be an ideal response?
What is unusual about the amino acid composition of histones? How is the function of histones related to the amino acid composition? Of which histones are nucleosomes composed?
What will be an ideal response?
Epithelial cell shapes and arrangements include: (check all that apply)
A. rod-shaped. B. columnar. C. transitional. D. symmetric. E. stratified.
Refer to the figure above. In their investigation of natural selection on Mc1r alleles (the gene that determines coat color) in Arizona pocket mice, Hoekstra et al. determined the frequency of the D and d alleles in each population
They also determined the frequency of alleles for two neutral mitochondrial DNA genes (genes that do not affect and are not linked to coat color). Why did the researchers include the mitochondrial DNA genes as part of their experimental design? A) Allele change for the neutral mitochondrial genes serves as an experimental group and gives information on any general background genetic difference among these populations. B) Allele change for the neutral mitochondrial genes serves as a control and determines coat-color differences among these populations. C) Allele change for the neutral mitochondrial genes serves as an experimental group and gives information on coat-color differences among these populations. D) Allele change for the neutral mitochondrial genes serves as a control and gives information on any general background genetic difference among these populations.