a. industrial revolution
b. world war ii
c. the internet
d. invention of the car
2. which of the following is a direct value of biodiversity:
a. biogeochemical cycles
b. the agricultural value of pollinators
c. regulation of climate
d. provision of fresh water
3. environmental impact of a population includes all of the following except:
a. pollution
b. population size
c. resource consumption
d. predation
4. in what life history pattern does logistic population growth occur:
a. density-dependent pattern
b. opportunistic pattern
c. biotic pattern
d. equilibrium pattern
5. what characteristic of a population increases with plentiful resources:
a. range
b. clumping
c. spatial distribution
d. population density
To determine the number of heterozygous individuals in a population of birds with black and white feather colors, we can use principles of Mendelian genetics and the Hardy-Weinberg equation. By calculating the frequency of the recessive allele and applying the equation 2pq, we can find the number of heterozygous individuals. In this case, the population contains 2260 heterozygous individuals.
To determine the number of individuals that are heterozygous, we need to use the principles of Mendelian genetics. Since black is dominant over white, we can infer that the individuals with the dominant phenotype are homozygous dominant (BB) or heterozygous (Bb).
Let's assume that the population consists of Bb individuals. Given that 75% of the population has the dominant phenotype, the remaining 25% must have the recessive phenotype (bb).
So, the frequency of the recessive allele (b) can be calculated using the Hardy-Weinberg equation: q = √(0.25) = 0.5.
Now, to find the number of heterozygous individuals, we can use the equation 2pq, where p is the frequency of the dominant allele (B) and q is the frequency of the recessive allele (b). Since p + q = 1, we can calculate p using the equation p = 1 - q = 1 - 0.5 = 0.5. Then, we can substitute the values into the equation 2pq:
2 × 0.5 × 0.5 = 0.5
Therefore, there are 0.5 × 4520 = 2260 heterozygous individuals in the population.
#SPJ6
b: dihybird cross
c: homozygous cross
d: heterozygous cross
The right answer is Slime molds are able to move
Mucilaginous mold are characterized because at some stage of their life cycle they form multinucleated aggregates (plasmodia) or multicellular (pseudoplasmodiums) that slide along the ground feeding on decaying plant matter. A few are parasites. They can be found on the ground, on the lawn and in deciduous forests. They are also common in leaf mulch or even in silt that accumulates in gutters. Some are aquatic, freshwater or marine.
The "body" of these Myxomycete consists of a mass of cytoplasm called plasmodium which is surrounded only by a thin membrane; there is no rigid wall like most mushrooms. This is why the plasmode can move by creeping or flowing, that is to say, by amoeboid movements.