B) plants evolved alternation of generations independently of green algae.
C) alternation of generations cannot be beneficial to charophytes.
D) land plants evolved directly from the green algae that perform alternation of generations.
E) scientists have no evidence to indicate whether or not land plants evolved from any kind of alga.
Recent molecular evidence suggests that land plants evolved directly from the type of green algae that performs alternation of generations. This trait was likely beneficial and thus retained in all land plants.
The correct interpretation of the given observations is D) land plants evolved directly from the green algae that perform alternation of generations. Molecular systematics evidence suggests a close relationship between charophytes (a type of green algae) and land plants, however, charophytes do not exhibit alternation of generations. This implies that the trait arose after the divergence of charophytes and the lineage that led to land plants. Once land plants appeared, all of them possessed the capacity to undergo alternation of generations, suggesting this trait was beneficial and retained in the subsequent evolution.
#SPJ6
Taking into account recent molecular systematics evidence, it is inferred that land plants evolved from the type of green algae that execute alternation of generations.
Based on the given information and considering the latest evidence from molecular systematics, it can be inferred that land plants evolved directly from the green algae that perform alternation of generations. This conclusion is drawn from the fact that both green algae (some species) and all land plants show the alternation of generations, a complex lifecycle involving two distinct multicellular stages. Charophytes, despite being a group of green algae, don’t display this trait, suggesting a different evolutionary pathway.
#SPJ6
True
False
True or False?
The given statement is True.
The developing countries have more population residing in the urban areas than in the rural areas. This is because they have more resources and have greater future perspective in terms of job and career. The developing countries have better space utilization in the urban areas and more people tend to live there because of the facilities available there.
b. homozygous.
c. heterozygous.
d. dominant.
Answer:
B. Homozygous
Explanation:
Homozygous organisms have two identical alleles for a trait. They may have two copies of dominant alleles or two copies of the recessive allele of a gene. For example, both RR and rr are homozygous genotypes. However, a heterozygous or hybrid genotype has one dominant and one recessive allele for a gene. Here, "Rr" genotype would be an example of hybrid or heterozygous genotype.
In genetics, organisms with two identical alleles for a specific trait are considered 'homozygous'. These can be either homozygous dominant or homozygous recessive, with the distinction depending on the specific alleles that are identical.
Organisms that have two identical alleles for a particular trait are said to be b. homozygous. This term is used in genetics, the branch of biology, for discussing the inheritance of traits. In this case, the two alleles inherited from parent organisms, one from each, are identical. For example, if a plant genotype is AA or aa for a specific trait, like height, it is considered homozygous, either homozygous dominant (AA) or homozygous recessive (aa).
#SPJ6