<span>The stage in which a child can make use of their eyes in the prenatal stage is known as the fetus. During this stage, a fetus can open and close their eyes, as well as formed tear ducts allows for them to cry.</span>
Answer:
12 : 3 : 1
Explanation:
According to Mendel's principles, a dihybrid cross between two heterozygous summer squash parents (WwGg X WwGg) should yield offsprings, 12 with white, 3 with yellow and 1 with green color phenotype. The classic Mendelian phenotypic ratio for dihybrid cross is 9:3:3:1. In this case, genotypes W- G- and W- gg produce white color phenotype. This is because we have 12: 3: 1 phenotypic ratio in which the alleles of two different genes assort independently into gametes.
<em>Dihybrid cross for heterozygous summer squash:</em>
WG Wg wG wg
WG WWGG WWGg WwGG WwGg
Wg WWGg WWgg WwGg Wwgg
wG WwGG WwGg wwGG wwGg
wg WwGg Wwgg wwGg wwgg
Genotypes:
W-G- and W- gg = white = 12
ww G- = yellow = 3
ww gg = green = 1
Answer: C
Explanation:
Use DNA from hair follicles of supposed zoo parents and of the supposed offspring to compare sequences amplified with primers for a highly polymorphic region.
DNA sequencing and comparison is a way for checking if two individuals are closely related. Comparison of the sequence of the parents to the supposed offspring will indicate if indeed there was a relationship or if it was imported.
The most important reason for food handlers to understand and apply food safety knowledge is to prevent the spread of illnesses through food.
Food workers play a critical role in ensuring food safety, those who do not practice proper personal hygiene, including hand washing at appropriate times and using appropriate methods can contaminate food. It is therefore; very important for food workers to understand and apply food safety measures so as to prevent spread of diseases through food.
Enter stationary phase of the bacterial growth curve. The rate of death of the bacteria is equaled by
the rate of replication. This is due to the stiff competition of the individuals
for the scarce nutrients. The bacteria begin to produce inhibitory molecules that also
increase the rate of mutations among the bacteria due to the harsh environment.
