Answer:
I think this is the answer :
animal cell: medium
plant cell: largest
bacteria cell: smallest
White blood cells (D) aid in the immune system to fight infections.
Answer:
100%, 50%
Explanation:
<em>A testcross involves crossing an organism of unknown zygosity with its homozygous recessive version.</em>
Assuming the purple flower pea plant is homozygous for the trait with genotype PP and it is crossed with homozygous recessive pea plant pp.
PP x pp = Pp, Pp, Pp, and Pp
100% of the progeny will be purple in appearance.
On the other hand, assuming the purple flower pea plant is heterozygous with genotype Pp and this is testcrossed with a pp plant.
Pp x pp = Pp, Pp, pp, and pp
50% of the progeny will be purple and the remaining 50% will be white.
<em>Hence, If you were to perform a test-cross to determine the genotype of a purple-flowered plant, you would expect the percentage of purple-flowered progeny to be </em><em>100%</em><em> if the plant is homozygous and </em><em>50% </em><em>if the plant is heterozygous.</em>
The answer is hypothalamus
Answer:
The option that best describes the advantages of pest resistance is:
<em>Farmers do not have to use harsh chemicals to save their crops.</em>
Explanation:
A pest can be described as an animal particularly an insect which damages plants or crops. Formerly, farmers had to use chemicals to kill insects which attacked the crops. These chemicals would affect the plants also. The insects also developed resistance for these chemicals after a short period of time.
Now, the techniques of biotechnology have made it possible to make crops which have pesticide resistant genes in them. These crops are hence not affected by the pesticides.
