1. Bromeliads are small plants
1 answer:
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The question is incomplete as it does not have the attached figure and the options which are:
A.) The population of frogs will decrease because of increased predation by snakes.
B.) The population of storks will increase because of decreased competition with eagles.
C.) The population of gnats will decrease because of a decrease in the amount of grass available.
D.) The population of grass will decrease because of increased predation by rabbits.
E.) The population of snakes will increase because of decreased predation by eagles.
Answer:
Option-A and E
Explanation:
In the given question, a structure of a complex food web has been provided in which the organism present at the different trophic level are affected by different factors including-
1. The population of Eagles (top consumer) has decreased due to human activities. Since the number of eagles has declined therefore the number of organisms on which it feeds will increase (snakes in the given question) due to no predation.
2. The population of rabbits (primary consumer) has decreased due to a virus. Since the number of rabbits will decline therefore the snakes will now shift eat more frogs and therefore the number of frogs will decline.
Thus, the selected options are correct.
Answer:
25% of the offsprings will be BBCC
Explanation:
This is a typical dihybrid cross involving two distinct genes. One coding for fur colour and the other for claw sharpness. The allele for brown fur (B) is dominant over the allele for black fur (b) in the first gene while the allele for sharp claws (C) is dominant over the allele for dull claws (c) in the second gene.
In a cross between parents with genotypes: BbCc x BBCC , each parent will produce four possible allelic combinations of gametes as follows:
BbCc: BC, Bc, bC, bc
BBCC: BC, BC, BC, BC
Using these gametes in a punnet square (see attached image), 16 possible offsprings will be produced with four distinct genotypes:
BBCC (4)
BBCc (4)
BbCC (4)
BbCc (4)
According to the question, an offspring that is homozygous dominant for both traits will possess a genotype: BBCC
N.B: Homozygous dominant means contains same alleles for the dominant trait.
Hence, offsprings with genotype, BBCC, from this cross are expected to be 4 out of the 16 possible offsprings. Hence, the percentage is 4/16 × 100 = 25%.
