Answer:
The answer is given below:
Explanation:
Most of the gender specific abnormalities which are related to chromosomes are due to sex chromosomes. As a rule in general males receives or inherit an X chromosome from his mother and a Y chromosome from his father, so males have XY- sex chromosomes. Females have XX-chromosomes, they inherit one X chromosome from mother and one X chromosome from father. One Y chromosome is enough to produce maleness and in absence of Y chromosome, it is necessary for femaleness.
Sex chromosome abnormalities in females appear as a result of change in the number of X chromosomes. In male abnormalities are due to change in the numbers of either the X or the Y chromosome or both.
Answer:
Pyramids of energy show the relative amount of energy available at each trophic level. A pyramid of biomass illustrates the relative amount of living organic matter at each trophic level. A pyramid of numbers shows the relative number of individual organisms at each trophic level in an ecosystem.
Explanation:
Allows them to stretch and compact when needed
Answer:
There are four forces of evolution: mutation, gene flow, genetic drift, and natural selection. Mutation creates new genetic variation in a gene pool. Gene flow and genetic drift alter allele frequencies in a gene pool.
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Proximate; mechanistic best describes the class of questions that Insel and Young were addressing when they studied the effect of anti-diuretic hormone on monogamous voles.
Explanation:
Genetic researchers, Insel and Young, conducted various studies to analyze the neurobiological aspects of pair bonding on monogamous voles. This was done by studying the changes observed due to the action of the antidiuretic hormone, vasopressin, when their receptors were increased. The transgenic voles exhibited differential gene expressions which explained the proximate and mechanistic mating behavior.
The role of the antidiuretic hormone explained the neurochemical mechanisms of the voles mating behaviors like bonding, attachment etc. Rather than increasing the amount of hormone, just by increasing the receptors of the hormone, male voles showed an increased social reproductive behavior.
