Answer:
8 chromatids
Explanation:
Meiosis is a kind of division that produces offsprings with their chromosomal number reduced by half. It occurs in a two-step division i.e. meiosis I and II. In meiosis I, homologous chromosomes (similar but non-identical chromosomes received from each parent) separate.
Hence, in this case involving a somatic cell with 16 chromatids. This means that it possesses 8 chromosomes since each chromosome comprises of two sister chromatids. During Anaphase 1 of meiosis 1, each homologous chromosome separate into opposite poles of the cell, and after cytokinesis, there would be 4 chromosomes (8 chromatids) in each cell.
These chromatids will separate in meiosis II.
D becausw commenlism is when one animal benefets when the other is uneffected
Answer:
The pedigree chart are used to check the mode of inheritance of certain trait.
Explanation:
The pedigree is used to know the probability of the offspring getting a particular disorder or condition. It also help to discover the location of the defected gene. And through it can also be predicted that weather it will be a dominant or a recessive trait. For this pedigree data of several generations are required. Here, the phenotype ratios of the offspring can be accurately determined only when the genotypes of the parents are known.
Gametophytes produce cells that undergo mitosis to produce gametes that fuse to form a zygote.
Answer:
C) 50%
Explanation:
Let the homozygous recessive organism be rr
Let the heterozygote be Rr
If both organism crosses together: Rr × rr
= we have ( Rr, Rr, rr, rr) as their offspring.
The question says; what is the chance of producing an offspring with the homozygous recessive phenotype?
From above, the chance of producing an homozygous recessive is 50%.
i.e (2/4) × 100%
=(1/2) × 100%
= 50%
