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Each sperm and egg cell are genetically different, because during meiosis, recombination by crossing over happens. Chromosomes exchange genetic material between TWO chomatids of homologous chromosomes out of four in a bivalent. Thus 50% gametes are parental and 50% new combinations.
Margarette Ratke
Wiki User
∙ 16y agoThere are several reasons: # Males carry an X and a Y chromosome, so half of their gametes will carry an X and half will carry a Y. # If a male is heterozygous for any alleles, then half his sperm will carry one allele and half the other. # Recombination shuffles combinations of alleles between homologous chromosomes, making it almost certain that none of his sperm will be identical. # Mutations occurring during meiosis will also add variation
Wiki User
∙ 11y agoEach sperm and egg cell are genetically different, because during meiosis, recombination by crossing over happens. Chromosomes exchange genetic material between TWO chomatids of homologous chromosomes out of four in a bivalent. Thus 50% gametes are parental and 50% new combinations.
Wiki User
∙ 11y agobecause their cell membranes are unique, like snowflakes. Gametes undergo a slightly different version of meiosis during its formation and they have a different combination of parental chromosomes.
Wiki User
∙ 12y ago- because there not the same
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How are the gametes produced by meiosis alike?
They are all 1N (haploid) and they all come from the same individual (assuming the question is regarding the gametes produced by a single individual).
What are the two types of gametes in the human body?
Gametes in humans are cells that fuse with other during fertilization (the reproductive process). The respective gametes are egg shaped for females and tadpole shaped for males.
When two gametes join together during fertilization they form?
Two gametes join together during fertilization to form a zygote.
Are there any two butterflies alike?
Butterflies do not have a shell made of two similar parts. Most beetles, which are not part of the butterfly family do have shells made of similar parts.
What are male gametes?
A gamete is one of two cells needed for sexual reproduction. Male gametes are sperm, while female gametes are eggs. When fused, they form a zygote.
Can two things be exactly alike?
NO!!
Are leaves like fingerprints and snowflakes with no two exactly alike?
no.
Do a female and a male gray wolf look alike or different?
They can look alike but, they don't look exactly alike. No two of any species are exactly the same.
Why don't any two people look alike?
there is no person that looks exactly alike but there is a such thing as a dopple ganger and that is a person that looks alot like you but not exactly .
What two books are exactly alike in the Old and New Testament?
none
What word used for two things exactly alike?
simile
No two places on earth are exactly alike?
The north and south pole are exactly on the other end of the world
what are two things exactly alike?
Things that are alike are the same. If two things are alike, it means they resemble or are similar to each other. For example, You and your sister might be alike in many ways, including your love for ice cream or chocolates.
No two of these 1983 to 85 most popular Christmas toys were exactly alike?
Transformers
How are the gametes produced by meiosis alike?
They are all 1N (haploid) and they all come from the same individual (assuming the question is regarding the gametes produced by a single individual).
Who are we psychologically?
Answer Since there are no two people exactly alike perhaps you have to ask yourself who you are psychologically, hopefully you will have your answer.
What is the line called that divides a shape into two parts that look exactly alike?
It is a line of symmetry
