Answer:
Man's genotype: Bbdd
Woman's genotype: bbDd
First child's genotype: Bbdd
Second child's genotype: bbDd
Explanation:
This is a dihybrid cross involving two genes; one coding for eye color and the other for hair color in humans. The allele for brown eye (B) is dominant over the allele for blue eyes (b) in the first gene while the allele for dark hair (D) is dominant over the allele for red hair (d) in the second gene.
According to the question, A man with brown eyes and red hair will possibly possess genotypes: BBdd or Bbdd while a woman with blue eyes and dark hair will possibly have genotype: bbDD or bbDd. Considering the fact that they produced children with recessive traits for both gene (blue eyes and red hair), it means that they are heterozygous for their dominant trait. This means that the ideal genotype for the man is Bbdd since he will produce gametes containing B and b alleles for the first gene while the ideal genotype for the woman is bbDd since it will produce gametes with D and d allele for the second gene.
Hence, a child with brown eyes and red hair will possess genotype: Bbdd since he/she cannot receive two dominant alleles for the first gene from both parents. A child with blue eyes and dark hair will have genotype: bbDd since he/she cannot receive two dominant alleles of the second gene from both parents.
Answer:
lots of carbon dioxide and cold temperatures
Explanation:
<em>Calcium carbonate has low solubility at room temperature and the solubility increases as the temperature decreases. The solubility of calcium carbonate also increases in water with high level of carbon dioxide due to the formation of more soluble bicarbonate. </em>
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<em>This is why carbon dioxide rich rainwater is able to erode limestone rocks, leading to the formation of caves, stalactites and other structures in the long run as a result of reversal of the process.</em>
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Atlantic Cod is a marine fish. The fish has less salt in its internal body while the salt concentration in the sea water in which the Cod lives is high. Thus through the process of osmosis ( a process in which an element moves across a permeable membrane from regions of high concentration to the regions of low concentration) the salt moves from the ocean into the fish body. In such scenario the metabolism of the fish body gets disturbed, and there is an urgent need to remove the excess salt with the help of Kidney (through extremely concentrated urine) by going against the concentration gradient in order to maintain the homeostasis.
Answer:
<em>plants grow in dessert (xerophytes) shows adaptation to storage of water, there cells store large amount of water. They also conserve water by reducing the rate of transpiration and converting leaves into spine.</em>
<em>plants grow in dessert (xerophytes) shows adaptation to storage of water, there cells store large amount of water. They also conserve water by reducing the rate of transpiration and converting leaves into spine.The plants that grow on sea shores have a hypertonic medium so they have salt glands to remove excessive salt.</em>
<em>plants grow in dessert (xerophytes) shows adaptation to storage of water, there cells store large amount of water. They also conserve water by reducing the rate of transpiration and converting leaves into spine.The plants that grow on sea shores have a hypertonic medium so they have salt glands to remove excessive salt.The aquatic plant doesn't need cuticle to conserve water from exosmosis.</em>
