Blog

Match the event with the phase of the Cell Cycle

How does the Red Queen Hypothesis connect to the benefit of having diverse MHC (major histocompatibility complex) alleles?

Which of the following most accurately describes the relationship between DNA, genes, and chromosomes?

Select the description that correctly explains the Red Queen Hypothesis.

Rh encodes for a protein that can be found on the surface of red blood cells. The Rh+ allele means that an Rh protein is made and is found on the cell surface. The Rh- allele means that no Rh protein is made. Individuals that have the genotype (Rh+, Rh-) have the Rh protein on the surface of their red blood cells and are considered “Rh positive.” For each statement below, determine if it is true or false based on the information above. Two people who are Rh negative could have a child who is Rh positive [answer1] Two people who are Rh positive could have a child who is Rh negative [answer2] The allele for making Rh protein is recessive [answer3]

In this class, how is sex defined?

Determine if each statement is supported by the figure below.   1) Female junglefowl use cryptic female choice to select preferred sperm. [answer1] 2) Female junglefowl mate less frequently with related male junglefowl. [answer2] 3) Female junglefowl require the physical presence of male junglefowl to determine MHC similarity. [answer3] 4) The sperm of related male junglefowl are defective and therefore female junglefowl discard them. [answer4]

Use the cell below to answer the following questions: How many chromosomes? [a1] How many complete sets of chromosomes are present? In other words, what is the ploidy of this cell? [a2]  

Indicate whether the following processes lead to new combinations of alleles in ONLY meiosis and fertilization (i.e. in sexual reproduction only). Do not select processes that lead to new alleles in mitosis (i.e. in asexual reproduction) as well, or that do not lead to new allele combinations in either form of reproduction. Select yes if a process leads to new allele combinations in offspring in specifically sexual reproduction. Otherwise, select no. Errors in telophase: [telo] Crossing over: [cross] Mutation: [mut] Independent assortment: [IA] Random fusion of sperm and eggs: [fus]

All whiptail lizards are female and they reproduce by cloning themselves. What percentage of the alleles in a mother’s DNA are shared by her daughter?