Answer: a) true
Explanation: The fluid inside the egg helps in the survival of embryo and maintain fluid environment.
"Time is the independent variable, and the number of birds is the dependent variable" is the one among the following choices given in the question that states the independent and dependent variables in Sam’s investigation correctly. The correct option among all the options that are given in the question is the second option.
Answer:
1. tall (or heterozygous)
2. 3:1
3. carriers
4. Each parent organism contributes one copy of its alleles in a seemingly random fashion to its offspring, as meiosis to create gametes (egg or sperm cells) reduces the number of genes by half. Therefore, each gamete contributes only one allele.
5. A Punnett square is a diagram used to map out the possible genotypes of a child given the genotypes of its parents. In a Punnett square, the genotype of one parent is listed in the first row of the square, and the genotype of the second parent is listed in the first column. Then, in the middle squares, all possible genotypes of their offspring are listed, and the phenotypes are calculated using the law of dominance.
6. Purebred strains of organisms always produce heterozygous offspring in the first generation, with all members of the first generation exhibiting the dominant trait for the gene of interest. The second generation typically has a 3:1 mix of dominant and recessive phenotypes, respectively.
7. Punnett squares predict that the second generation of two distinct purebred homozygotes for a trait will have a 3:1 ratio of dominant to recessive traits. Mendel did careful statistical analysis on his hybridization experiments and found that, for each of his seven characteristics of interest, the ratio was approximately, but not exactly, 3:1. Therefore, Mendel's experimental observations match the predictions of Punnett squares quite well.
Explanation:
The main benefits of the monoculture farming are that it has higher production, is more efficient, and has lower costs. All three advantages of the monoculture farming are making it much more attractive for the farmers as it is more profitable and easier for work.
In this type of farming there's no spaces of the arable land that are lost because it is all planted with the same culture, and there isn't any other cultures with which there should be made empty spaces in between.
The costs for farming are lower, and also the work is easier and more efficient because the machinery can be used in the same manner constantly and the work can go on systematically on the farmlands.
On the other hand, we have to mention that there are also negative effects of this type of farming like the total destruction of animal and plant biodiversity in the area where it is practiced, as well as making the entire crop vulnerable to diseases and environmental changes.
When comparing the birth patterns of humans and non-human primate, Rosenberg and Trevathan discovered some very clear differences:
1. The human period of labour and child birth is exceptionally long and painful compared to other non-human primates.
E.g. a human labour can last anywhere from 10-20 hours while that of a chimpanzee lasts only 2 hours.
2. Humans have the ability to walk straight, the trade off however is that it is extremely difficult and painful to give birth to a big brained human baby.
