A. that is the hypothesis
The plant evolution has also led to changes in the sporophyte and gametophytes. The sporophytes have apparently beacome larger, and the gametophytes have become samller. Sporophyte like algae were previously single-celled and now evloved to multi-cellular structure. So, Your answer is B.
If this oil<span> mixes with dead </span>skin<span> cells and blocks a pore, it </span>can<span> produce a pimple.</span>Sebaceous glands<span> produce </span>oil<span> called sebum that moves up hair follicles to the surface of the </span>skin<span>, where the </span>oil<span> lubricates </span>skin<span> and hair. The </span>gland<span> may keep producing </span>oil<span> when the opening is blocked, leading to a pimple.</span>
Because of you go closed to
Answer:
D
Explanation:
This involves a dihybrid inheritance I.e. two genes are being passed on. During meiosis, specifically, the Prophase stage, homologous chromosomes (similar but non-identical chromosomes received from each parent) line side by side. According to the question, one chromosome contains A and B alleles and its homologue, received by the other parent carries a and b alleles. This means that the diploid individual has a genotype AaBb for that gene.
According to Mendel's law of independent assortment, the alleles separate independently of one another into gametes. I.e. allele A and a separates into the gametes without affecting alleles B and b of the other gene.
Crossing-over, which is the exchange of chromosomal segment occurs between the two homologues. Hence, the exchange of chromosomal segments containing alleles in the individual will possibly produce four gametes with the genotypes: AB, Ab, aB, ab.
