In mice Igf2 gene which encodes a protein called insulin like growth factor II (Igf2). Offspring inherit one Igf2 allele from their mother and one from their father The paternal copy of Igf2 is actively expressed in the fetus, but the maternal copy is not expressed. which of the following is correct about this gene?

a) this is an example of genomic imprinting and showing maternal imprinted

b) this is an example of genomic imprinting and showing paternal imprinted

c) mechanism of imprinting is due to the addition of methyl (CH3) groups to DNA nucleotides

d) mechanism of imprinting is due to changing the nucleotide sequences

TLS Online TPP Program

#Question id: 12416

#Unit 10. Ecological Principles

A type I survivorship curve describes a population that has relatively

TLS Online TPP Program

#Question id: 12417

#Unit 10. Ecological Principles

_________ are an example of an animal with a Type II survivorship curve.

TLS Online TPP Program

#Question id: 12418

#Unit 10. Ecological Principles

The number of females born in each age group is the

TLS Online TPP Program

#Question id: 12419

#Unit 10. Ecological Principles

If the number of females in a population is remaining constant through time, r0 will

TLS Online TPP Program

#Question id: 12420

#Unit 10. Ecological Principles

Given the following information, determine whether the number of females in the population is increasing, decreasing, or remaining the same. Of 1000 individuals in age group 0–1 none reproduce and 500 survive to age group 1–2. One-half of those in age group 1–2 survive to age group 2–3. 125 individuals survive to age group 3–4. In age group 3–4 there is an average of 1 female birth per female. In each age group, with the exception of the 0–1 age group, there is an average of 1 female birth per female.

TLS Online TPP Program

#Question id: 12421

#Unit 10. Ecological Principles

If λ=1, then the number of females in the population is