Author: Anonymous

Each of these statements describes a fitness cost of either asexual reproduction or sexual reproduction. For each statement, select “cost of asexual” or “cost of sexual” reproduction. A) Deleterious mutations can accumulate over many generations. [A] B) There is a risk of contracting diseases when reproducing. [B] C) Individuals do not pass on all of their genes to their offspring. [C]

Which of the following is NOT a prediction of the Sire Choice Hypothesis?

The female fertile window is between days 10-14 of the menstrual cycle. For each statement related to the fertile window, select true or false.  1) Ovulation occurs in the middle of the fertile window. [1] 2) Sperm can live in the female reproductive tract for up to 5 days. [2] 3) Fertilization must occur in the uterus within 12 hours of ovulation. [3] 4) Fertility is lowest during the middle of the luteal phase. [4]

For each statement, indicate whether it must be true for the female orgasm to be an adaptation. (In other words, false = not required for female orgasm to be an adaptation.) 1) The ability to have an orgasm must be heritable. [1] 2) Female orgasm must lead to a decrease in reproductive success. [2] 3) There must be variation in orgasm ability in the human population. [3] 4) The female orgasm must have evolved through intrasexual selection. [4]

Which flower species is most closely related to Rose?

Which mechanism of evolution occurs when some individuals leave a population to join a different population?

For each, determine if it describes mitosis, meiosis, or both. Look at the options carefully because Canvas will change the order. Results in daughter cells that are genetically unique [answer1] DNA is replicated once before division [answer2] Daughter cells have the same number of chromosomes as the original cell [answer3]

The graphs below are from a study about bluethroat birds. The researchers compared immune system health (A) and genetic variation (B) in offspring produced by extra-pair (EP) copulations and offspring produced by within-pair (WP) copulations. Imagine that a biologist expresses this opinion: “A consequence of genetic monogamy in birds is that offspring fitness is higher because there is greater parental care. That’s why the mating system of bluethroats is genetic monogamy.” Using the data in the graphs, select the most accurate response to this biologist.

Researchers studied gender dysphoria in monozygotic and dizygotic twins. In this study, all pairs of twins had at least 1 twin with gender dysphoria. Researchers then asked if the other twin also had gender dysphoria.  Assigned sex at birth Twin group # concordant/total # pairs % P value Females Monozygotic 3/8 37.5%   Not done Dizygotic 0/5 0% Males Monozygotic 6/15 40%   Not done Dizygotic 0/16 0% Combined Monozygotic 9/23 39.1%   p = 0.005 Dizygotic 0/21 0% Indicate whether each statement about the table is correct or incorrect: Because monozygotic twins are more likely to both have gender dysphoria it suggests a genetic contribution to gender dysphoria: [1] Because monozygotic twins are not 100% concordant it suggests an environmental contribution to gender dysphoria: [2] Twins assigned male at birth are significantly more likely to be concordant than twins assigned female at birth: [3]

Which mating system would be favored in an environment where offspring require high parental care, resources are spread out, and female fertility is hidden?