Answer:
Photosynthesis make energy and food for plants and give oxygen to animals.
Explanation:
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
b. sound signal
c. language
d. visual signal
Answer:
d. visual signal
Explanation:
Changing color by cephalopods ssuch as squid & octopi is a type of visual signal which helps in communication. These creatures are highly social animals and for social behavior communication is a must. So, in order to communicate effectively, they often change the colors and patterns of their skin. Initially this ability to change color was meant for camouflage but later on these animals started using this ability to communicate. The control centre of such visual signals is their brain which can manipulate thechromatophores within their body. They usually use such visual signals during courtship rituals and hunting.
The example that best describes incomplete dominance is sheep with gray fleece. The correct answer is option d.
Incomplete dominance is a pattern of inheritance in which the heterozygous phenotype is intermediate between those of the homozygous dominant and homozygous recessive genotypes.
In the case of the sheep with gray fleece, the gray phenotype is the result of a cross between a white sheep (homozygous dominant for the "white" allele) and a black sheep (homozygous recessive for the "white" allele). The heterozygous offspring inherit one "white" allele and one "black" allele, resulting in a phenotype that is intermediate between white and black - in this case, gray.
So, the correct answer is option d) sheep with gray fleece.
Learn more about incomplete dominance here:
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Answer:
By the end of meiosis, four cells will be created, each with one of the chromatids from the tetrad. Also, don't forget that there are 23 different tetrads formed during meiosis because each chromosome 1-23 will have a tetrad.
In humans, four tetrads form during the synapsis of meiosis.
In humans, a total of four tetrads form during the synapsis of meiosis. Synapsis occurs during Prophase I of meiosis, where homologous chromosomes pair up and form a structure called a bivalent. Each bivalent consists of two pairs of sister chromatids held together by a protein structure called a synaptonemal complex. Since there are 23 pairs of chromosomes in humans, there will be 46 total tetrads formed during meiosis, as each homologous pair forms a tetrad.
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