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Answer:
For short the answer im pretty sure the answer is C.
Some people have freckles, and some people do not have freckles. If a child has freckles, at least one parent has freckles.
Freckles are determined by two genes instead of by one. If Mendel had crossed a true breeding dominant plant with a true breeding recessive plant, in which of the three generations is the recessive trait visible.
Freckles are not determined by DNA. There are two alleles for freckles. There is no dominant allele for freckles. Freckles are determined by two genes instead of by one. F1 generation .P generation, F1 generation and F2 generation, P generation and F2 generation.
Primase is an enzyme that synthesizes short RNA sequences called primers. These primers serve as a starting point for DNA synthesis during replication as the DNA polymerases cannot begin the synthesis of the new strand, they only extend it after primase begins it and primase produces RNA molecules, the enzyme can be said to be a type of RNA polymerase.
Therefore, Some people have freckles, and some people do not have freckles. If a child has freckles, at least one parent has freckles.
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Part 1.
The correct answer is option 2.There are two alleles for freckles.
According to the condition of the occurrence of the freckles, it can be concluded that the freckle is an autosomal dominant condition. The freckle can only be inherited, if there is at least one dominant allele in any of the parent. If both the individuals are heterozygous for the trait, they can produce an offspring without freckle by passing down the recessive alleles to the progeny. So, the freckles are controlled by two alleles, which can be either dominant or recessive.
Part 2.
The correct answer is option 4. P generation and F2 generation.
In this case, it is given that true bred homozygous recessive plant is crossed with true bred homozygous dominant plant. The true bred recessive plant always shows the recessive phenotype. When true bred homozygous recessive plant is crossed with true bred homozygous dominant plant, the F1 generation would produce all the heterozygous individual and exhibit dominant phenotype. When the F1 generation is self crossed, it result in 75% dominant phenotype and 25% recessive phenotype.
A possible cross for this case is given in the picture.
B. The pharynx contains the vocal cords.
C. The pharyngeal tonsil is located in the laryngopharynx.
D. The auditory tube drains into the nasopharynx.
Answer:
D. The auditory tube drains into the nasopharynx.
Explanation:
The auditory tubes, commonly known as eustachian tubes have their pharyngeal openings in the lateral wall of the nasopharynx. Auditory tubes also prevent the mucus to enter the middle ear by channelizing it into the nasopharynx. This clearance of mucus does not allow any infection to spread to the middle ear.
The correct statement about the pharynx is that the auditory tube drains into the nasopharynx.
The correct statement about the pharynx is D. The auditory tube drains into the nasopharynx.
The palatine tonsils are actually embedded in the lateral walls of the oropharynx, not the nasopharynx. The pharynx contains the larynx, not the vocal cords. And the pharyngeal tonsil is located in the nasopharynx, not the laryngopharynx.
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b. they eat very different types of food
c. their chromosomes should be very similar
d. they should share fewer homlogous structures than two more closely related organisms.
e. they should be members of the same species
Answer:
d. they should share fewer homologous structures than two more closely related organisms.
Explanation:
One of the bases for determining how related two species of organisms are is by determining the similarities and differences in their anatomy. The number of homologous structures shared between two organisms is what is being considered here. Homologous structures are organs found among different organisms that share similar ancestral origin. These homologous structures shared among the different organism of the same ancestry have similar bone configuration. An example of homologous structure is the forelimb structure which is similar in configuration in humans, bats, and birds.
Homologous structures serve as evidence that points to the fact that two organisms are related or share a common ancestry.
Consequently, it is inferred that, the more homologous structures that two organisms share, the more closely they are related. Therefore, if two modern organisms are distantly related in an evolutionary sense, then one should expect that they should share fewer homologous structures than two more closely related organisms.
Answer:
d. they should share fewer homologous structures than two more closely related organisms
Explanation:
In evolution, homology is defined as the similarity level of two or more organisms due to the existence of a common ancestor. In this case, it is expected that the homologous structures evidence the evolutionary relationships among these organisms