A pillbug belings to Kingdom Animalia, Phylum Arthropdoa, and Class Crustacea.
Answer: a. Genetic recombination (crossing over)
b. Can also be explained in terms of crossing over
c. Non disjunction of homologous chromosomes in meiosis 1
Explanation:
The process that allows for the transfer of both the paternal and maternal materials to is the crossing over process that takes at meiosis 1 changing them to secondary spermatocytes. While they are still primary spermatocytes, they are still diploid cells having both the maternal and paternal chromosomes. But since the spermatozoon is an haploid cell, it is able to retail some of both parents chromosome by the crossing over event which takes place between homologous paternal and maternal chromosomes allowing them to exchange materials. Thus the chromosomal contents of the primary spermatocyte differs from that of the spermatozoon.
C. This can occur as a result of the one of the homologous chromosome pair refusing to separate at meiosis 1 with one gamete containing 4 chromosomes/8 sister chromatids and the second having 2 chromosomes/4 sister chromatids.
Answer:
selective interference
Explanation:
Natural selection acts on genes that are inherited together, which is the case for species of asexual reproduction (where genes are inherited together by clonal offspring). In asexual species, linkage disequilibrium (i.e., non-random association of the alleles of different <em>loci</em>), can be understood in a similar mode in terms of population allele frequencies. Selective interference underlies the association between beneficial mutations and surrounding sites which are subject to deleterious mutations. It has been shown that asexual species adapt at a slower rate than species of sexual reproduction. In sexual species, selective interference could be bypassed through the mechanism of recombination during meiosis (although there is not conclusive evidence of this). In asexual species, different deleterious and beneficial mutations are generally fixed, whereas beneficial mutations are generally spread and fixed in species of sexual reproduction.
Answer:
Bending or flexion of the forearm and elbow
Explanation:
Radial tuberosity, alongside head and neck, is one of the important landmarks of the radius. It is a bony projection on the middle side of the radius where the tendons of the biceps branchii muscle insert itself.
In Anatomy, Radial tuberosity can be found at the center right of the left elbow and the upper left of the left forearm when the palm is facing upward.
The contraction of the biceps branchii muscle results in the flection or bending of the forearm and elbow
Answer
sound.
Explanation:
Vibration matter will able to create sound.
P/S: Are you joking is easy is too easy.
